Commonwealth, Aplt. v. Perez, A.

Supreme Court of Pennsylvania·Decided August 18, 2026·No. 818 CAP·Published·Mundy, Sallie

Opinions

[J-49-2025] IN THE SUPREME COURT OF PENNSYLVANIA EASTERN DISTRICT

TODD, C.J., DONOHUE, DOUGHERTY, WECHT, MUNDY, BROBSON, McCAFFERY, JJ.

COMMONWEALTH OF PENNSYLVANIA, : No. 818 CAP : Appellant : Appeal from the Berks County Court : of Common Pleas Order dated May : 28, 2009 at No. CP-06-CR- v. : 0002456-2008. : : SUBMITTED: April 2, 2025 ALBERT PEREZ, : : Appellee :

OPINION

JUSTICE MUNDY DECIDED: August 18, 2026 This capital PCRA appeal involves the January 2007 homicides of 22-year-old

Duceliz Diaz-Santiago and her five-year-old daughter, Kayla, in their apartment in

Bernville, Berks County.1

Appellee Albert Perez, Duceliz’s former paramour at the time of the incident, gave

a series of statements to the police over a seventeen-month period, culminating on the

day he was arrested in May 2008. At first, Appellee claimed he was not present at the

scene and had not seen Duceliz or Kayla in months. When investigative work showed

that to be false, he adjusted his story by admitting he was at the apartment on the morning

in question, but he asserted that when he left, both victims were alive and everything

seemed normal. That story collapsed too, and Appellee eventually conceded that he

1 In their filings to this Court, the parties have redacted Kayla’s name. We find redaction unwarranted in these circumstances. Kayla is deceased, and her name appears in this Court’s published decision denying Appellee’s direct appeal. See Commonwealth v. Perez, 93 A.3d 829 (Pa. 2014). killed Duceliz before leaving her apartment. He maintained, however, that Duceliz first

killed Kayla, and he reacted by killing her.

Appellee also admitted he staged the scene inside the apartment to look like a

murder-suicide to mislead investigators. He acknowledged that in furtherance of the ruse,

he sent a message from Duceliz’s email address to her family members posing as a

suicide note. Therein, while pretending to be Duceliz, Appellee implored her family

members to kill his estranged wife and the four children they shared, and also to kill his

estranged wife’s new boyfriend. At trial, Donald Sumner, a jailhouse informant with an

extensive criminal history, testified Appellee made incriminating statements while

incarcerated, reflecting his commission of both homicides. Sumner suggested Appellee

was especially concerned about what the other inmates might do to him once they learned

he killed a child. The jury convicted Appellee on both counts of first-degree murder and

returned two death sentences.

After his judgment of sentence became final on direct appeal, Appellee filed a

petition under the Post Conviction Relief Act (PCRA).2 The Berks County Court of

Common Pleas granted the petition and awarded a new trial. The court found defense

counsel provided ineffective assistance by not adequately cross-examining Sumner

about his criminal history and by not seeking to suppress some of Appellee’s statements

to the police. It also held the Commonwealth violated Brady v. Maryland, 373 U.S. 83

(1963), when it failed to disclose impeachment evidence relating to Sumner. The court

additionally concluded the Commonwealth violated Appellee’s right to a fair trial under

Napue v. Illinois, 360 U.S. 264 (1959), when it failed to correct false testimony given by

Sumner regarding his expectation of favorable treatment. The Commonwealth now

appeals to this Court, seeking reversal of the PCRA court’s order.

2 Act of May 13, 1982, P.L. 417, No. 122 (as amended 42 Pa.C.S. §§ 9541-9546).

[J-49-2025] - 2 I. Background

Resolution of the legal questions raised herein is fact-dependent, as the issues

concern, inter alia, an assessment of whether the alleged trial errors resulted in prejudice

for PCRA purposes. Under the PCRA, ineffective assistance of trial counsel can only

form the basis for relief if it “so undermined the truth-determining process that no reliable

adjudication of guilt or innocence could have taken place.” 42 Pa.C.S. § 9543(a)(2)(ii).

The same limitation exists when relief is sought based on a constitutional violation. See

id. § 9543(a)(2)(i). We have interpreted this statutory language to mean the petitioner

must demonstrate a reasonable probability that, but for the error in question, the outcome

of the trial would have been different. See, e.g., Commonwealth v. Jones, 210 A.3d 1014,

1019 (Pa. 2019) (citing Commonwealth v. Laird, 119 A.3d 972, 978 (Pa. 2015)). A judicial

evaluation along these lines is made in light of the totality of the evidence presented at

trial, whether the defendant is alleging a constitutional violation under Section

9543(a)(2)(i), see Commonwealth v. Dowling, 316 A.3d 32, 47 (Pa. 2024), or ineffective

assistance under Section 9543(a)(2)(ii), see Commonwealth v. Spetzer, 813 A.2d 707,

723-24 (Pa. 2002). Accordingly, we begin with a recitation of the underlying facts as

reflected by the evidence brought forth at trial.

A. Underlying events

Appellee married Jajaira Perez in 1999. By 2004, they had three daughters. In

October of that year, Appellee began dating Duceliz, whom he had met at work. He left

Jajaira and moved in with Duceliz at her parents’ home that same month, albeit his divorce

from Jajaira was not finalized until February 2008. Shortly thereafter, as well, Jajaira

learned she was pregnant with her fourth child. Jajaira claimed Appellee was the father,

but he denied this. Regardless, Appellee was ultimately obligated to pay child support

for all four children.

[J-49-2025] - 3 At that juncture, Kayla, Duceliz’s biological daughter, who was born in June 2001,

was three years old. Over time, Kayla became attached to Appellee and began referring

to him as “daddy.”3 For his part, Appellee sought to be recognized as Kayla’s guardian

and filed papers to this effect. The trial testimony suggested he was seeking to use that

circumstance to lower his support obligations relative to his children with Jajaira. See

N.T., 5/12-15/2009, at 467 (testimony of Jajaira Perez); id. at 388, 411 (testimony of

Corporal Jeffrey Szczecina).

Appellee and Duceliz eventually moved to a rented house together. Duceliz later

moved back in with her parents when the pair broke up in May 2006 after a family trip to

Puerto Rico. Appellee then began dating Melanie Ledbetter, and he moved in with her

and her family. Melanie had become engaged to Appellee by the time of the homicides,

and she would later become his wife. Meanwhile, in early December 2006, Duceliz

moved with Kayla to her new apartment in Bernville. According to the trial testimony,

even after Appellee and Duceliz stopped living together, the latter still loved Appellee and

the two would occasionally meet for what trial witnesses described as “adult activities.”

See id. at 85 (testimony of Johanna Romero); N.T., 5/6/2009, at 80 (testimony of Hector

Ruiz). But Duceliz was wary of any purported attempts on Appellee’s part to rekindle their

romance as she did not trust his intentions.

As of January 12, 2007, the Friday before the homicides, Duceliz had been

employed for a few months at a daycare center. She worked there through a temp

agency, but she had just been offered a full-time position directly with the center, which

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