BELSON, Senior Judge:
Appellant, Colie L. Long, asks this court to recall the mandate it issued in 2006 after the resolution of his direct appeal in Long v. United States, 910 A.2d 298 (D.C.2006) (Long I) and to reconsider our holding in that case. After evaluating appellant’s claims, we grant the motion, reconsider our earlier decision, vacate appellant’s sentences but not his convictions, and remand for resentencing.
An abridged recitation of the history of this case is necessary to understand the conclusion we reach here.2 On March 19, 1996, appellant “shot and killed fourteen-year-old Ronald Williamson.” Long I, 910 A.2d at 301. A grand jury indicted appel[373]*373lant for first-degree premeditated murder and related charges. At appellant’s first trial, which took place in March 1998, the jury convicted him only of “carrying a pistol without a license, and a mistrial was declared on the other charges.” Id. at 303. The government obtained a superseding indictment, and appellant’s second trial began on June 22, 1998. Id. At this trial, appellant was convicted of first-degree premeditated murder while armed,3 conspiracy to commit murder,4 assault with a dangerous weapon,5 and possession of a firearm during a crime of violence.6 Id. at 301. After a subsequent hearing, the trial court issued an order on September 30, 1998, sentencing appellant to life in prison without parole (“LWOP”). Following the procedure required at that time by D.C.Code § 22-2404, the trial judge found, beyond a reasonable doubt, that three of the aggravating factors listed in D.C.Code § 22-2404.17 existed in this case: “(1) that the murder was especially heinous, atrocious or cruel; (2) that the murder victim was especially vulnerable due to age; [and] (3) the murder was committed after substantial planning.”8 Appellant filed a timely notice of appeal. He subsequently filed a motion to vacate his conviction pursuant to D.C.Code § 23-110 (2001) on grounds of ineffective assistance of trial counsel, the denial of which appellant also appealed.
Litigation over appellant’s D.C.Code § 23-110 motion delayed this court’s resolution of his direct appeal until 2006. During that time, the Supreme Court issued a series of decisions, including Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000), Ring v. Arizona, 536 U.S. 584, 122 S.Ct. 2428, 153 L.Ed.2d 556 (2002), Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004), and United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), that expanded constitutional protections for defendants at sentencing. This court quickly recognized in other cases that, in light of the Supreme Court’s decisions, a defendant is entitled to trial by jury regarding the aggravating factors that can make a defendant eligible for a sentence of LWOP. In a series of cases, beginning with Keels v. United States, 785 A.2d 672 (D.C.2001), this court applied plain-error review to sentences of LWOP imposed prior to the issuance of Apprendi. Upon finding plain error, this court reversed and remanded several cases for re-sentencing. See id. at 687, see also Robinson v. United States, 890 A.2d 674, 685 n. 19 (D.C.2006) (Robinson I); Dockery v. United States, 853 A.2d 687, 691 (D.C.2004).
Appellant himself took note of the applicability of the Apprendi line of cases to his own situation. In April 2001, he wrote to his attorney on direct appeal, Richard Stolker, suggesting that “due to Apprendi v. New Jersey my sentencing to life in prison without parole is not right (or shall we say unconstitutional). Simply because the enhancement papers (which were the [374]*374reasons for my life without parole sentence in accordance with § 22-2404.1), were not brought before a grand jury and that all of the aggravating circumstances (especially while attempting to commit a robbery) were never substantially proven.”9 But counsel did not take any steps to raise appellant’s Apprendi issue. Three years later, on July 16, 2004, appellant filed a pro se Rule 35(a) motion to correct his sentence, citing both Apprendi and Blakely. Appellant argued that, at his sentencing hearing, “the government presented 4 aggravating factors to the court, which warranted the imposed sentence of life imprisonment without the possibility of parole. The jury which deliberated my case held no knowledge of these aggravating factors.” On August 9, 2004, Appellant’s Rule 35 motion was denied by the trial court in an order that did not cite Keels, which this court had decided in 2001. The trial court sent notice of its denial to appellant’s counsel on direct appeal. No appeal from that order was noticed.
On May 5, 2005, after appellant’s D.C.Code § 23-110 motion was denied without a hearing, Mr. Stolker filed a brief on appellant’s behalf in this court. The brief cited neither Apprendi nor Keels. Nonetheless, counsel did obtain some relief for appellant, as this court remanded for a hearing on the D.C.Code § 23-110 motion. Long I, 910 A.2d at 310-11. On remand, Mr. Stolker was replaced as appellant’s attorney by Thomas Heslep, on February 2, 2007. Mr. Heslep eventually filed a “Renewed Motion for Correction of Sentence” in April 2008. Referring back to appellant’s initial pro se filing in 2004, Mr. Heslep cited Apprendi, Blakely, Keels, and another LWOP case, Robinson v. United States, 946 A.2d 334 (D.C.2008) (Robinson II). In Mr. Heslep’s motion, he noted that “Mr. Long’s appellate counsel did not raise this issue ..., although he should have done so. Nevertheless Mr. Long raised it during the pendency of his appeal.” In its opposition to Mr. Heslep’s motion, filed on June 24, 2008, the government pointed out that any claim of deficient representation by appellant’s counsel on direct appeal could be litigated in this court only through a motion to recall the mandate.
Following further procedural steps not pertinent here, see Long II, 36 A.3d at 377-78, the trial court denied Mr. Heslep’s motion as procedurally barred. In 2012, a divided panel of this court affirmed, holding that Mr. Heslep’s motion was procedurally barred by appellant’s failure to appeal the denial of his pro se motion in 2004 but, more important, concluding also that Apprendi did not apply retroactively to collateral attacks because it was neither “a substantive rule nor a watershed rule of criminal procedure.” Id. at 379. This court did note, however, that appellant could have pursued his Apprendi claim on direct appeal, “as the appellant did in Keels v. United States.” Id. at 379 n. 12 (citation omitted).
After the trial court’s decision in Long II, appellant’s third post-conviction counsel, Sydney Hoffmann was appointed on January 7, 2009. She filed on March 28, 2012, the motion to recall the mandate currently at issue. The motion requests that this court recall the mandate issued after Long I because appellant was deprived of effective assistance of counsel on his direct appeal when his then counsel failed to present this court with appellant’s [375]*375Apprendi claim. However, as the government points out, appellant’s motion was filed well after the expiration of the 180-day period established for such motions by D.C.App. R. 41(f).10 Accordingly, before evaluating the motion on the merits, our first task is to determine whether we can and should consider this untimely motion.
I. Rule 26(b) and “Good Cause”
Anticipating the government’s objection, appellant has also requested that this court exercise its power under D.CApp. R. 26(b) and “extend the time prescribed by these rules to” file his motion.11 This court may grant such an extension only upon a showing of “good cause.” In his motion, appellant argues that his own prompt and timely efforts to have his Apprendi issue adjudicated on the merits, despite his and his attorneys’ failure to identify the proper procedural mechanism, support a finding of “good cause.” The government responds that since appellant and his attorneys clearly knew of his Apprendi claim for years before this motion was filed, appellant must advance a more adequate excuse for the prolonged failure to move to recall the mandate. However, it is clear to us that the delay in the filing of appellant’s motion to recall the mandate has been due to the failure of counsel to do what was necessary to protect appellant’s rights under Appren-di.
That appellant has not received, overall, effective representation by his first two post-conviction counsel regarding his Ap-prendi claim cannot be seriously disputed. The failure of appellant’s original counsel on direct appeal to make an Apprendi argument on that appeal after appellant had requested in writing that he do so fell below the standards for effective representation articulated in Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984), and its progeny. He also failed to move to recall the mandate on the ground that he should have advanced appellant’s Apprendi claim on direct appeal. This failure is understandable because attorneys generally cannot be expected to argue their own ineffectiveness. See Hardy v. United States, 988 A.2d 950, 960 (D.C.2010). However, Mr. Heslep, who succeeded as appellant’s original counsel while the 180-day window to recall the mandate was still open, was free to argue the ineffectiveness of previous counsel. Mr. Heslep’s motion of April 15, 2008, renewing appellant’s 2004 pro se Rule 35(a) challenge, demonstrates that he understood appellant’s Apprendi claim, was familiar with this court’s case law indicating that the claim of ineffective assistance would have succeeded had it been raised, and recognized that previous counsel ought to have raised the claim on direct appeal. He did not, however, file a motion to recall mandate within the 180-day period, as required by the rule. Mr. Heslep later had the benefit of the government’s response to his motion, which correctly identified the proper procedural remedy for ineffective appellate counsel: a motion to recall the mandate. Clearly, after that response, counsel ought to have filed a motion to recall mandate.
We therefore confront this question: do appellant’s extraordinary personal efforts to assert his Apprendi claim constitute good cause sufficient to warrant the granting of the requested lengthy extension of [376]*376time under Rule 26(b)? Initially, we note that this court has not yet rendered an opinion explaining what constitutes “good cause” in the context of our Rule 26(b). However, we have interpreted a variety of rules that require a showing of “good cause,” or its cousin, “excusable neglect,” to forgive a party’s delay in acting. See, e.g., Restaurant Equip. & Supply Depot v. Gutierrez, 852 A.2d 951 (D.C.2004) (discussing “good cause” in Super. Ct. Civ. R. 55(c)); Mizrahi v. Schwarzmann, 741 A.2d 399 (D.C.1999) (“good cause” in Super. Ct. Civ. R. 16(b)(6), 26(e), (g)); Wagshal v. Rigler, 711 A.2d 112 (D.C.1998) (discussing “good cause” in Super. Ct. R. Civ. 41(b)); Lynch v. Meridian Hill Studio Apts., 491 A.2d 515 (D.C.1985) (analyzing what constitutes “excusable neglect” under Super. Ct. Civ. R. 60(b)(1)); Railway Exp. Agency, Inc. v. Hill, 250 A.2d 923 (D.C.1969) (same). We also have the benefit of several cases from the United States Courts of Appeals, some of which we cite below, interpreting the “good cause” standard of Federal Rule of Appellate Procedure 26(b), which is similar to our own. Accordingly, we look to the concepts articulated in those cases when determining what standard to apply in analyzing Rule 26(b).
“Although we have not squarely defined ‘good cause,’ our cases establish that good cause is to be determined ‘in the light of the circumstances of each case.’ ” Restaurant Equip., 852 A.2d at 956 (citation omitted). “In making that determination, this court has always found the moving party’s reasons for failing” to comply with the applicable rule “to be a key consideration.” Id. at 956-57. In general, mere “inattendance to office chores and good faith mistakes are not sufficient to show good cause.” Mollura v. Miller, 621 F.2d 334, 335 (9th Cir.1980); see also Restaurant Equip., 852 A.2d at 956-57 (no “good cause” where party claimed it “inadvertently ‘forgot’ to file” answer). It is especially significant here that our cases also require consideration of the prejudice that would result to either party from the grant or denial of the extension, and a “balancing of the] efficiency of the court system” with “our preference for decisions” on the merits. Mizrahi, 741 A.2d at 404.
Generally, an attorney’s mistake of law or lack of “due diligence” will not excuse a failure to comply with court rules. See Lynch, 491 A.2d at 518. However, this court has granted relief in exceptional cases where an attorney’s conduct was so plainly contrary to “his express instructions or his implicit duty to devote reasonable efforts in representing his client, provided that the client himself is diligent in pursuing the claim.” Id. at 519 (internal quotation marks and citation omitted). We think such an exception is most appropriate in this case. Appellant brought his Apprendi claim to the attention of his counsel on direct appeal over a decade ago, and has attempted to litigate it, with and without the assistance of counsel, ever since. See Citizens Bldg. & Loan Ass’n of Montgomery Cnty. v. Shepard, 289 A.2d 620, 623 (D.C.1972) (affirming grant of relief, despite delay of over four years, where “appellees’ express instructions (to file an answer) were ignored” and where defaulting parties “‘used reasonable and extreme diligence’ in attempting to protect their rights”). We conclude that in two instances appellant’s attorneys acted in violation of either their “express instructions” or their “implicit duty to devote reasonable efforts” to appellant’s representation.12 Appellant himself, on the other [377]*377hand, made extraordinary efforts to obtain a resolution of his Apprendi claim, even writing his counsel on direct appeal advising him of the applicability of Apprendi, and filing his own motion for relief on that ground. Accordingly, we conclude that appellant has shown good reason for his failure to move to recall the mandate at an earlier date.
In analyzing the remaining considerations, we note that the government has not identified any prejudice it suffered as a result of appellant’s untimely filing. Given that appellant stands sentenced to serve an unconstitutionally-imposed sentence of LWOP, our weighing of the prejudice to each party in this case clearly favors appellant. We are also mindful of our preference for decisions on the merits, and do not think that the efficiency of our court system will be harmed by our deciding appellant’s Apprendi claim on the merits.13 Apprendi was decided thirteen years ago and, given the unique nature of appellant’s pursuit of his claim in this case, we see little risk that our decision here will call into question the finality of mandates in more than a very few other cases. Accordingly, for these reasons, we conclude that appellant has shown good cause and permit him to press his motion to recall the mandate after the expiration of the time for bringing such a motion. We now consider appellant’s motion to recall the mandate on the merits.
II. Appellant’s Motion to Recall the Mandate
The proper procedural vehicle under our case law for presenting this [378]*378court with a claim of ineffective assistance of appellate counsel is a motion to recall the mandate. Watson v. United States, 536 A.2d 1056, 1060 (D.C.1987) (en banc). On receiving such a motion, this court will determine whether the movant has satisfied his or her “heavy initial burden” of “set[ting] forth in detail a persuasive case for recall of the mandate.” Id. The mov-ant must “give ‘chapter and verse’ ” and demonstrate with “factual support” a claim of constitutional ineffectiveness, a standard “quite familiar to the court.” Id.; see Strickland, 466 U.S. at 685-98, 104 S.Ct. 2052. In order to succeed, a movant is required to show not just that “the court’s opinion on the first appeal was wrong” but also that the court’s opinion “would not have been wrong but for the ineffective assistance of counsel on the first appeal.” Watson, 536 A.2d at 1058.14 Once we determine that the motion has merit, “[t]his court will pursue a claim of ineffective assistance of appellate counsel ... by recalling the mandate and reopening the movant’s appeal in order to fully explore and then decide whether there was ineffective assistance of counsel on the first appeal.” Id. at 1061. In this opinion, we will expedite matters by combining our discussion of the motion’s merit with the resolution of appellant’s claim of ineffective assistance of appellate counsel.15
A. Deficient Performance
In order for appellant’s claim of ineffective assistance of appellate counsel to succeed, appellant must demonstrate (1) that the “performance of counsel fell below an objective standard of reasonableness” and (2) that appellant suffered “prejudice, i.e., it must be established that there is a reasonable probability that but for counsel’s unprofessional errors, the result of the proceeding would have been different.” Griffin, 598 A.2d at 1176 (internal citations and quotations omitted). Here, the deficiency of appellant’s counsel on direct appeal is clear. As the government concedes, “it is unlikely that appellant’s counsel had strategic reasons for not pursuing” the Apprendi issue on direct appeal. We agree and cannot conceive of any reasonable “professional judgment” which would lead an attorney to disregard an issue which, at the time of appeal, would likely have resulted in the vacating of appellant’s LWOP sentence and the remand of the case for resentencing. See Dockery, 853 A.2d at 700; Keels, 785 A.2d at 687. As we have said in other cases, “a single error of counsel may constitute ineffective assistance of counsel if the error is sufficiently egregious and prejudicial.” Griffin, 598 A.2d at 1177-78. This is such a case.
B. Prejudice
Next, we ask whether the failings of appellant’s counsel on direct appeal affected this court’s decision. In other words, we ask whether this court, had it been briefed on appellant’s Apprendi issue, [379]*379would have affirmed the judgment of conviction, including, as it did, his sentence to LWOP. Since the resolution of this question will also resolve appellant’s Apprendi claim on the merits, we will proceed to apply this court’s “plain error” analysis to that question.
III. Applying “Plain Error” Review to Appellant’s Apprendi Claim
“ ‘[W]here the law at the time of the trial was settled and clearly contrary to the law at the time of appeal,’ as in this case, ‘it is enough that an error be plain at the time of appellate consideration.’ ” Keels, 785 A.2d at 682 n. 7 (quoting (Joyce) Johnson v. United States, 520 U.S. 461, 468, 117 S.Ct. 1544, 137 L.Ed.2d 718 (1997)). Appellant, therefore, must demonstrate that (1) there was Apprendi error, (2) the error was plain, (3) the Ap-prendi error “affect[ed his] substantial rights,” and (4) “the error seriously affects the fairness, integrity, or public reputation of judicial proceedings.” Johnson, 520 U.S. at 467, 117 S.Ct. 1544 (internal citations, brackets, and quotation marks omitted). If the first three elements have been established, it is for the appellate court to decide, in the exercise of discretion, whether to notice the error. Id. In this case, the trial court made factual findings, beyond those made by the jury, to determine appellant’s eligibility for an enhanced sentence of LWOP. There can be no dispute that, in light of Apprendi the trial court’s error is now clear. See Keels, 785 A.2d at 682-84. Appellant has satisfied the first two prongs of plain error review.
A. Appellant’s “Substantial Rights”
To demonstrate success on the third prong, that the error affected his substantial rights, appellant has to “show a ‘reasonable probability' ” that, but for the trial court’s error, appellant would not have been sentenced to LWOP. Ingram v. United States, 40 A.3d 887, 899 (D.C.2012) (quoting United States v. Dominguez Benitez, 542 U.S. 74, 81-82, 124 S.Ct. 2333, 159 L.Ed.2d 157 (2004)); see also Zanders v. United States, 999 A.2d 149, 161 (D.C.2010). Put differently, appellant must “satisfy the judgment of the reviewing court, informed by the entire record, that the probability of a different result is ‘sufficient to undermine confidence in the outcome’ of the proceeding.” Dominguez Benitez, 542 U.S. at 83, 124 S.Ct. 2333 (citing Strickland, 466 U.S. at 694, 104 S.Ct. 2052).
This court has recognized that the relevant question in this context, as explained by the Supreme Court in Washington v. Recuenco, 548 U.S. 212, 126 S.Ct. 2546, 165 L.Ed.2d 466 (2006), is whether it can be “determined ... that, had the sentencing factor been properly submitted to the jury, the jury would have found the element proved beyond a reasonable doubt.” Robinson II, 946 A.2d at 339 n. 8. Thus, we engage in inquiry like that previously used for determining whether or not the omission of an element of a crime from a jury instruction has prejudiced the defendant. See Neder v. United States, 527 U.S. 1, 119 S.Ct. 1827, 144 L.Ed.2d 35 (1999). In Recuenco, the Supreme Court analogized to Neder, explaining that the key question for harmfulness is “whether the jury would have returned the same verdict absent the error.” Recuenco, 548 U.S. at 221, 126 S.Ct. 2546; see also Kidd v. United States, 940 A.2d 118, 126 (D.C.2007) (applying Neder, and finding no reversible error where evidence was strong regarding defendant’s mens rea, even though mens rea language was erroneously omitted from aiding and abetting jury instruction).
B. The Trial Court’s Findings and the Evidence at Trial
As noted earlier, the trial court found three aggravating factors present in [380]*380appellant’s case. Following a short sentencing hearing, the trial court issued its findings of fact. The court found “that the murder of Ronald Williamson was especially heinous, atrocious and cruel. [Appellant] murdered a youngster who was his friend. The manner in which he executed Williamson — shooting him; walking away; re-loading his gun; and walking back to put a final shot into Williamson’s head — shocks the conscience of the community.” The court also concluded that “Ronald Williamson was an especially vulnerable victim, due to his age.” Last, the court concluded that appellant “committed this murder after substantial planning” because he “made repeated statements to his friends regarding his intent to murder Williamson and he waited outside the apartment door where Williamson stayed that night, waiting for Williamson to leave the building. [Appellant] then followed Williamson into the alley and shot him.” Were we reviewing these findings for sufficiency in the light most favorable to the government, we might affirm. However, because the findings were arrived at through an unconstitutional procedure, we ask instead whether the evidence so strongly supported the trial court’s conclusions “that, had the sentencing factor been properly submitted to the jury, the jury would have found the element proved beyond a reasonable doubt.” Robinson II, 946 A.2d at 339 n. 8; see also Dominguez Benitez, 542 U.S. at 83, 124 S.Ct. 2333.
After reviewing the record as a whole, we cannot comfortably conclude that there is the requisite degree of probability that, had a jury been asked to decide the presence of the aggravating factors, it would have reached the same conclusion that the trial judge reached. In our estimation, reasonable minds could well have disagreed about whether this murder was “especially heinous, atrocious, or cruel,” a standard that requires a conclusion that this murder was worse than most first-degree premeditated murders. See Rider v. United States, 687 A.2d 1348, 1355 (D.C.1996) (emphasis added).
In this case, the jury heard extensive testimony about an armed feud between two groups of young men that had been going on for several weeks before Long shot Williamson. The testimony of several different witnesses established that although appellant and Williamson had once been friends and roommates, a falling out between two brothers — James and Tracy Rauch — split Long and Williamson into rival camps. Williamson, and another man, Macellus Thompson, moved out of the apartment that they and Tracy Rauch had shared with appellant, James Rauch, and William Tilghman. Thompson moved in with Tracy Rauch and his girlfriend, while Williamson began staying with his mother. After moving out of James’s apartment, Williamson and Thompson were present on another occasion when Tracy fought his brother James there. Later that day, James Rauch and one of his associates, a man called Peanut, came upon Tracy Rauch, Williamson, and Thompson. Another fight broke out, and James stole Tracy’s vest and phone.
The following morning, Tracy Rauch, Thompson, and Williamson, the murder victim here, went to James Rauch’s apartment, where appellant and Tilghman were present. The three intruders took a television and some coats before “kicking] the phone jacks out” and destroying some video games. Although others disputed his account, appellant would later claim that during the encounter Tracy Rauch struck him with one gun and Williamson threatened him with another. Thompson testified that his ally Williamson had a baseball bat, but no other weapons. In any event, bad blood remained between the two groups of men. Tilghman testified that “if [381]*381[Williamson] had a got the chance to get [appellant], he would have got him.”
Williamson not only participated in these conflicts, he was also armed in various ways. There was undisputed evidence that Williamson had with him a starter pistol he sometimes carried. Tilghman also testified that Williamson sometimes carried other “real guns,” including a .38 revolver and “some type of shotgun ... something like a .22 or something.” On the day of the murder, Tilghman saw Williamson with a gun on two occasions, including once, hours before the murder, in the apartment building where appellant, James Rauch, and Tilghman lived. The jury also heard testimony from Tilghman suggesting that, shortly before appellant fired his gun, Williamson began to reach towards his waist as though going for a weapon.16 After the murder, the police recovered a starter pistol, which looked like a real gun but was incapable of firing a projectile, near Williamson’s body.
We do not recount these events to suggest some post hoc justification for appellant’s actions, but rather to place this particular premeditated murder in context. This was an escalating feud between two groups of young men, both of whom had been armed in various ways throughout. The victim had participated in the conflict; carrying, at least, a baseball bat during a bold and aggressive burglary and possibly threatening appellant with a gun while committing that crime. The victim was known to carry weapons, was actually carrying a starter pistol at the time of his death, and may have attempted to draw it when confronted in the dark alley.
All premeditated murders are to some degree heinous, atrocious, and cruel, but in order to sentence a defendant to LWOP, the murder must be especially heinous, atrocious, and cruel. Rider, 687 A.2d at 1355. Thus, the law compels an evaluation of the circumstances of the crime, and an examination of both “the murderer’s state of mind” and “society’s view of the murder as compared with other murders.”17 Id. Here, we have a crime involving two people who had spent the preceding weeks as members of hostile armed groups. Although appellant’s homicide was without legal justification, it was not committed at random against an unsuspecting member of the community, but rather in revenge against the perpetrator of an earlier crime who may have acted as though he was armed at the time of the shooting. Id. (describing “random” killings as among those considered especially heinous, atrocious and cruel); see also Parker v. United States, 692 A.2d 913, 917 n. 6 (D.C.1997) (affirming finding of “extremely heinous atrocious or cruel murder” in part because “the attack on [the victim] was unprovoked”).
Further, appellant’s crime is not clearly within the class of murders discussed by the Committee on the Judiciary when the Council of the District of Columbia enacted its LWOP statute. Rider, 687 A.2d at 1355. Appellant did not “tie[ ] and gag[ ]” Williamson before killing him, nor was this shooting “just for the fun of it.” Id. Appellant also did not torture Williamson or [382]*382inflict gratuitous suffering. Cf. Parker, 692 A.2d at 917 n. 6 (murderer left victim of unprovoked attack, who was “cognizant of her injuries,” “to die” and suffering “excruciating pain, physical and mental”); Rider, 687 A.2d at 1350-51, 1356 (affirming trial court’s finding on “especially heinous, atrocious, and cruel” where, after striking fatal blow with a heavy object, defendant disfigured victim’s genitalia with a knife while the victim was still breathing); Henderson v. United States, 678 A.2d 20, 23 (D.C.1996) (murder committed during burglary “especially heinous atrocious or cruel” because “the death in this case was a form of torture” as victim was stabbed repeatedly and had her throat cut before eventually being strangled). Considering that the courts deal with a significant number of seemingly more inhumane crimes, we cannot conclude that a jury would have agreed with the conclusion the trial court reached on this factor, even if we cannot label the trial court’s decision “wrong.” After Apprendi, the decision is not the trial court’s to make, and we can affirm only if we have confidence that a jury would reach the same outcome. For the reasons we have given above, we do not.18
Having found that appellant would be entitled to vacation of the trial court’s findings on one of the aggravating factors, the especially heinous nature of the crime, we [383]*383need not examine the quality of the proof underlying the two remaining aggravating factors that the trial court found present. In Keels, we held that “[b]asic fairness thus requires that the trial judge conduct the sentencing of [appellant] un-influenced by a misapprehension as to the extent of his eligibility for a punishment as severe as LWOP.” 785 A.2d at 687. In that case, even though one of the aggravating factors had been proven to the jury, we remanded for resentencing after concluding that two other aggravating factors were considered unconstitutionally by the judge. Id. at 686-87. Here, we follow a similar approach. Appellant has demonstrated that he was prejudiced by the trial court’s actions with regard to at least one factor under Apprendi and Recuenco. Provided he can satisfy the fourth prong of the plain error test, he will be entitled to a remand for re-sentencing.
C. The Fourth Prong of the Plain Error Test
Appellant has established that he was prejudiced by a plain Apprendi error. If he can also show that “the error seriously affects the fairness, integrity, or public reputation of judicial proceedings,” then this court may, in the exercise of discretion, decide to notice the error. Johnson, 520 U.S. at 467, 117 S.Ct. 1544 (internal citations and quotation marks omitted).19 Our holding in Keels makes it clear that the fourth prong should be deemed satisfied here.
In Keels, as in this case, appellant had been sentenced to LWOP by the trial judge before the Supreme Court decided Apprendi. We permitted counsel for appellant in Keels to file a supplemental brief raising the Apprendi issue. In imposing LWOP, the trial judge had relied on three aggravating factors. We were satisfied that one of them — that the first degree felony murder had been “committed while committing or attempting to commit a robbery,” Keels, 785 A.2d at 686—was coextensive with the jury’s finding that Keels was guilty of that charge. The remaining two factors on which the trial judge based the sentence to LWOP, however, were not matters that the jury had been called upon to decide. Concluding that the misconception as to the number of aggravating factors properly before her may have seriously affected the judge’s exercise of sentencing discretion, we stated:
Basic fairness thus requires that the trial judge conduct the sentencing of Keels uninfluenced by a misapprehension as to the extent of his eligibility for a punishment as severe as LWOP. See generally United States v. Tucker, 404 U.S. 443, 448-49, 92 S.Ct. 589, 30 L.Ed.2d 592 (1972); In re L.L., 653 A.2d 873, 889 (D.C.1995) (‘Where a judge, in exercising her discretion, has ... misapprehended the applicable legal principles, we often remand the case for reconsideration under the correct standards.”); cf. (James) Johnson v. United States, 398 A.2d 354, 365 (D.C.1979).
Keels, 785 A.2d at 687 (emphasis added). On the basis of our conclusion that the requirements of basic fairness had not been met, this court rejected the government’s contention that Keels had not met [384]*384the fourth part of the standard for plain error. Id. at 682, n. 7 & 687.
In the case before us, the lack of fairness is more obvious than in Keels. Here the jury had not made findings coextensive with any of the three aggravating factors on which the trial judge based the imposition of LWOP. Accordingly, we conclude that the public reputation of judicial proceedings would suffer if we allowed appellant’s sentence to stand.
IV. Conclusion and Remand
For the foregoing reasons, we grant appellant’s motion to recall the mandate as sufficiently meritorious, and after re-opening appellant’s direct appeal, we conclude that appellant was prejudiced by the ineffective assistance of his appellate counsel. Therefore, we remand for resentencing.20 When remanding for the correction of similar errors in the past, this court has vacated all the sentences imposed on a defendant in order to afford the trial court “the opportunity to resentence on all charges as the structure of the entire sentence may have been affected by the LWOP sentence for first-degree murder.”21 Dockery, 853 A.2d at 701. The government has requested that we take a similar approach in this case.22 Consistent with our precedent in similar cases, we order all of appellant’s sentences associated with this verdict vacated so that the trial court may structure an appropriate sentence on remand.
So ordered.
ORDER
PER CURIAM.
On consideration of appellant’s motion to amend the court’s October 24, 2013,- opinion, and Public Defender Service’s motion for leave to participate as amicus curiae and to file a lodged memorandum in support of motion to amend the court’s October 24, 2013 opinion, and appellant’s motion to file under seal the lodged motion to supplement motion to amend the court’s October 24, 2013, opinion, it is
ORDERED that appellant’s motion to amend is granted, and this court’s opinion filed on October 24, 2013, is hereby amended and reissued in amended form on this day of January 23, 2014. It is
FURTHER ORDERED that Public Defender Service’s motion for leave to participate as amicus curiae and to file a lodged memorandum in support of motion to [385]*385amend the court’s October 24, 2014, opinion is granted, and the Clerk is directed to file amicus curias'’s lodged memorandum in support of motion to amend the court’s October 24, 2013 opinion. It is
FURTHER ORDERED that appellant’s motion to seal the lodged motion to supplement motion to amend the court’s October 24, 2013 opinion is granted, and the Clerk shall file appellant’s motion to supplement motion to amend the court’s October 24, 2013 opinion. It is
FURTHER ORDERED that the Clerk is directed to seal appellant’s January 8, 2014, motion to supplement motion to amend the court’s October 24, 2013 opinion.