NEIGHBORS, Justice.
The defendant appeals his convictions on two counts of first-degree murder. The [1263]*1263defendant urges two grounds for reversal. First, the defendant argues that the trial court improperly admitted Exhibit Q-l into evidence. Second, he contends that his convictions for first-degree murder must be reversed because a person can be convicted of only one homicide offense where there is but one victim. We affirm the trial court’s evidentiary ruling and remand the judgments of conviction for further proceedings consistent with this opinion.
On June 26, 1979, eleven-year-old Michelle Conley was murdered at the Pinehurst Country Club (Club). The defendant, a maintenance man employed at the Club, was arrested at his residence the following morning. On June 29,1979, he was charged with first-degree murder, i.e., murder after deliberation,1 and first-degree kidnapping.2 At the preliminary hearing in the county court, the defendant was bound over to the district court for trial only on the murder charge.
The defendant filed a motion to suppress evidence. The district court suppressed all statements made by the defendant and certain items of physical evidence. The People filed an interlocutory appeal to this court. We affirmed the trial court. See People v. Lowe, 200 Colo. 470, 616 P.2d 118 (1980).
Following the remand of the case to the district court, the People filed a motion to add a second count to the information charging the defendant with first-degree murder, i.e., felony murder by reason of sexual assault on a child.3 The motion was granted over the defendant’s objection. The district court held a preliminary hearing on count two. The court found there was probable cause to believe the defendant committed the crime charged.
The case was tried to a jury. The following evidence is relevant to our resolution of this appeal: Michelle was swimming at the Club. She left the pool area to go to the women’s locker room. The defendant took Michelle into a small electrical room behind the engineer’s office located in the basement of the Club where he forced her to perform fellatio. Two weeks prior to the murder, orthodontic braces had been placed on Michelle’s teeth. When the braces cut his penis, the defendant became angry and killed the child. The parties stipulated that the cause of death was trauma to the head due to a blunt instrument. The evidence also indicated the defendant attempted to kill Michelle by strangling and/or suffocating her. The defendant wrote incriminating letters, including Exhibit Q-l, to fellow inmates at the Denver County Jail. The letters were admitted into evidence.
The jury returned its verdict finding the defendant guilty of both murder after deliberation and felony murder. The trial court entered a judgment of conviction on each count. The defendant was sentenced to the Department of Corrections for life.
I.
The defendant’s first argument is that the trial court erred in admitting Exhibit Q-l because the document was irrelevant and prejudicial.4 At trial, defense counsel objected to the introduction of paragraph 1 of the exhibit on the ground it was prejudicial. The alleged error was not specifically raised in the defendant’s motion for a new [1264]*1264trial. However, we elect to resolve the issue on its merits because of the substantial question presented. On appeal, the defendant claims the exhibit was not relevant and that its prejudicial contents outweighed any probative value.5 Therefore, we must decide the issue under C.R.E. 401 and 403.
A.
Relevancy is the threshold standard which all tendered evidence must meet. Evidence is relevant when it renders the claimed inference more probable than it would be without it. People v. Madson, 638 P.2d 18 (Colo.1981). Relevant evidence is defined in C.R.E. 401 as:
“[Ejvidence having any tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence.”
Rule 401 is silent as to what factors the trial court must consider in deciding whether the proffered evidence meets the requisite standard of probability. “This silence emphasizes that the Federal Rules reject Wigmore’s theory that legal precedents determine relevancy, in favor of Thayer’s view that ‘the law furnishes no test of relevancy.’ ” 1 Weinstein & Berger, Weinstein’s Evidence ¶401[08] at 401-42 (1982) (footnotes omitted). Therefore, a trial judge has broad discretion in determining whether the tendered evidence meets the probability standard. However, this discretion is not unlimited. First, C.R.E. 102 provides that:
“These rules shall be construed to secure fairness in administration, elimination of unjustifiable expense and delay, and promotion of growth and development of the law of evidence to the end that the truth may be ascertained and proceedings justly determined.”
Second, even though the drafters of Rule 401 endorsed Thayer’s view that relevancy issues must be decided on a case by case basis, it is obvious that particular categories of evidentiary facts will appear in cases on a recurring basis. Legal precedents will be developed by appellate courts for the guidance of trial courts in the exercising of their discretion. Appellate review of relevancy decisions is limited because we must assume the maximum probative value that a reasonable fact finder might give the evidence and the minimum unfair prejudice to be reasonably expected. 1 Weinstein & Berger, Weinstein’s Evidence ¶401[01] at 401-10 (1982).
The determination of whether proffered evidence is relevant is within the sound discretion of the trial court. If the evidence has probative value in determining the central issue in dispute, the trial court’s decision will not be reversed unless it is shown that there was an abuse of discretion. See Tucker v. Lower, 200 Kan. 1, 434 P.2d 320 (1967). In addition, both the Federal and Colorado Rules of Evidence strongly favor the admission of evidence. See United States v. Dennis, 625 F.2d 782 (8th Cir.1980).
B.
We now review the trial court’s admission of Exhibit Q-l. The first issue to be resolved is what are the facts of consequence in the case. “Whether or not a fact is of consequence is determined not by the rules of evidence but by substantive law.” 1 Weinstein & Berger, Weinstein’s Evidence ¶ 401[03] at 401-16 (1982). Under the pertinent provisions of section 18-3-102, C.R.S. 1973 (1978 Repl.Yol. 8), the facts of consequence in the prosecution of murder after deliberation and felony murder are (1) whether the defendant, after deliberation, and with specific intent, caused the death of another person; and (2) whether the defendant in the course of committing or attempting to commit sexual assault on a child caused the death of another person.
Paragraph 2 of Exhibit Q-l is properly characterized as an admission as opposed to [1265]*1265a confession. An admission is “an acknowl-edgement by the accused of certain facts which tend, together with other facts, to establish his guilt.” 3 Wharton, Criminal Evidence § 694 (13th ed. 1973). An admission is also defined as “any voluntary statement by one accused of ... crime, relating to some particular fact or circumstance and not the whole charge, which indicates a consciousness of guilt and tends to connect him with the crime charged and to incriminate him.” 2 Underhill, Criminal Evidence § 381 (5th ed. 1956).
Under the rubric “consciousness of guilt,” evidence of a party’s behavior is relevant to show, through a series of reasonable inferences, that the accused committed the crime charged. At least two permissible inferences may be drawn from paragraph 2. First, the defendant was conscious of the fact that he had been charged with first-degree murder. Second, the permissible inference which a jury could draw from the statement “your [sic] just as weak as that little girl!” is that the defendant killed Michelle Conley, with whose murder he was charged. Accordingly, paragraph 2 of Exhibit Q-l was relevant and was properly admitted into evidence.
Threats against a witness are also admissible to show consciousness of guilt. See, e.g., United States v. Gonsalves, 668 F.2d 73 (1st Cir.1982), cert. denied, 456 U.S. 909, 102 S.Ct. 1759, 72 L.Ed.2d 168 (1982); United States v. Monahan, 633 F.2d 984 (1st Cir.1980); United States v. Flick, 516 F.2d 489 (7th Cir.1975), cert. denied, 423 U.S. 931, 96 S.Ct. 282, 46 L.Ed.2d 260 (1975); United States ex rel. Hill v. Pinto, 394 F.2d 470 (3d Cir.1968); State v. Valenzuela, 109 Ariz. 1, 503 P.2d 949 (1972). The problem presented here, however, is that the threats were made by the defendant against a party who was not a witness in the case. That distinction is not determinative of the issue because the circumstances tend to show the defendant’s consciousness of guilt on the charge of killing the child.
C.R.E. 403 establishes a balancing test. The trial court may exclude relevant evidence only “if its probative value is substantially outweighed by the danger of unfair prejudice.” (Emphasis added.)
The rule of completeness provides a satisfactory basis for the admission of the entire document. In McRae v. People, 131 Colo. 305, 281 P.2d 153 (1955), we held:
“[I]f a statement made by the defendant in a criminal case is admissible in evidence as an admission or declaration, it is admissible as an entire statement, including the parts thereof which are favorable as well as the parts which are unfavorable to the party offering the same in evidence.”
131 Colo, at 311, 281 P.2d 153. By admitting the entire letter into evidence, the possibility of undue prejudice and distortion which would have resulted from taking paragraph 2 out of context was avoided. The defendant’s rights were protected, rather than compromised, by the trial court’s decision to admit Exhibit Q-l in its entirety. The testimony and the letter established the circumstances under which the threat was made and the defendant’s possible motivation in sending the letter.
In addition to Exhibit Q-l, Exhibit Q-2 and the testimony of three of the defendant’s fellow inmates at the Denver County Jail were admitted into evidence without objection. Exhibit Q-2 is a letter from the defendant to another inmate. In the letter the defendant admitted killing the child. The three inmates testified that the defendant told them he killed the child.
In applying the standards set forth in this opinion, we are persuaded that the trial court did not abuse its discretion in admitting Exhibit Q-l. The exhibit was properly submitted to the jury as part of the evidence in the case.
II.
The defendant argues that principles of double jeopardy prohibit him from being convicted of two counts of first-degree murder for one killing. He claims that his dual convictions for one homicide violate the prohibition against double jeopardy afforded by the United States and Colorado Consti[1266]*1266tutions. The People contend that the offenses of murder after deliberation and felony murder are separate and distinct crimes and that the double jeopardy clauses of the United States and Colorado Constitutions are not violated where there is a unitary trial resulting in dual convictions and concurrent sentences being imposed for the killing of one victim.
In Ex parte Lange, 85 U.S. (18 Wall.) 163, 21 L.Ed. 872 (1873), the Supreme Court recognized that the double jeopardy clause of the Fifth Amendment to the United States Constitution6 prohibits the imposition of multiple punishments for a single offense.
“It is clear that preventing multiple punishment for the same offense was foremost in the minds of the framers of the double jeopardy clause. Until joinder became permissible and commonplace, however, multiple punishment could result only from multiple trials.” (Citation omitted.)
Comment, Twice in Jeopardy, 75 Yale L.J. 262, 266 n. 13 (1965). The fifth amendment protection against double jeopardy under the federal constitution was made binding on the states in Benton v. Maryland, 395 U.S. 784, 89 S.Ct. 2056, 23 L.Ed.2d 707 (1969). The Supreme Court has summarized the tripartite protection afforded by the double jeopardy clause as follows:
“It protects against a second prosecution for the same offense after acquittal. It protects against a second prosecution for the same offense after conviction. And it protects against multiple punishments for the same offense.” (Footnotes omitted.)
North Carolina v. Pearce, 395 U.S. 711, 717, 89 S.Ct. 2072, 2076, 23 L.Ed.2d 656 (1969). See also Brown v. Ohio, 432 U.S. 161, 97 5.Ct. 2221, 53 L.Ed.2d 187 (1977), and Ortiz v. District Court, 626 P.2d 642 (Colo.1981).
The Supreme Court has adopted the “same evidence” test to determine whether two statutes proscribe the same offense. In Blockburger v. United States, 284 U.S. 299, 52 S.Ct. 180, 76 L.Ed. 306 (1932), the Court held:
“The applicable rule is that where the same act or transaction constitutes a violation of two distinct statutory provisions, the test to be applied to determine whether there are two offenses or only one, is whether each provision requires proof of a fact which the other does not.”
284 U.S. at 304, 52 S.Ct. at 182.
We adopted the Blockburger test in a series of cases beginning with People v. McKenzie, 169 Colo. 521, 458 P.2d 232 (1969). See, e.g., People v. Bridges, 199 Colo. 520, 612 P.2d 1110 (1980); People v. Rael, 199 Colo. 201, 612 P.2d 1095 (1980); People v. Hancock, 186 Colo. 30, 525 P.2d 435 (1974); People v. Rivera, 186 Colo. 24, 525 P.2d 431 (1974); People v. Bugarin, 181 Colo. 62, 507 P.2d 875 (1973). We adhered to the Blockburger test believing it to be constitutionally required. The United States Supreme Court has now clarified its decisions interpreting Blockburger. The Blockburger test is now deemed by the Supreme Court to be only a rule of statutory construction. Missouri v. Hunter,-U.S. -, 103 S.Ct. 673, 74 L.Ed.2d 535 (U.S. 1983). See also Albernaz v. United States, 450 U.S. 333, 101 S.Ct. 1137, 67 L.Ed.2d 275 (1981), and Whalen v. United States, 445 U.S. 684, 100 S.Ct. 1432, 63 L.Ed.2d 715 (1980). In Missouri v. Hunter, supra, the Court held that the “Double Jeopardy Clause does no more than prevent the sentencing court from prescribing greater punishment than the legislature intended.” -U.S.-at-, 103 S.Ct. 673 at 678, 74 L.Ed.2d 535.
We reject the Blockburger test as the controlling principle in this case for three reasons. First, we believe that Block-burger is an acceptable test only in resolving the issue of whether one offense is merged into another by reason of identity [1267]*1267of elements.7 In Brown v. Ohio, supra, the Supreme Court stated that “[t]he greater offense is ... by definition the ‘same’ for purposes of double jeopardy as any lesser offense included in it.” 432 U.S. at 168, 97 S.Ct. at 2227. The Court added that “the sequence [of the greater and lesser offenses] is immaterial.” Id. The Supreme Court has never applied the Blockburger test in a case where the accused has been charged with committing the same crime in alternative ways, e.g., first-degree murder by felony murder and after deliberation.
Second, the Blockburger test focuses on the abstract proof required to establish the statutory elements. However, in Illinois v. Vitale, 447 U.S. 410, 100 S.Ct. 2260, 65 L.Ed.2d 228 (1980), the Court offered yet another approach to double jeopardy protection. This new application focused on the actual proof to be presented at trial rather than the abstract proof necessary to establish the statutory elements. The defendant was found guilty of failing to reduce speed by the circuit court. The state then charged him with involuntary manslaughter in the juvenile division of the circuit court. The Court stated that the accused would have a “substantial” double jeopardy claim if the state relied on his failure to reduce speed as the reckless act necessary to prove the crime of manslaughter. 447 U.S. at 421, 100 S.Ct. at 2267.
Third, the Blockburger test has fallen into considerable disfavor. In Whitton v. State, 479 P.2d 302 (Alaska 1970), the Alaska Supreme Court stated:
“Although this test has been widely used by the courts, it has been increasingly criticized as not coping satisfactorily with the problem it was designed to solve. Legislative refinement of an essentially unitary criminal episode into numerous separate violations of the law has resulted in a proliferation of offenses capable of commission by a person at one time and in one criminal transaction. Since eaeh violation by definition will usually require proof of a fact which the others do not, application of the same-evidence test will mean that each offense is punishable separately. But as the separate violations multiply by legislative action, the likelihood increases that a defendant will actually be punished several times for what is really and basically one criminal act.” (Citations omitted.) (Footnote omitted.)
479 P.2d at 306.
In resolving questions of multiple convictions and punishments for a single act, two additional methods of analysis should be considered. One, “[t]he Due Process Clause of the Fourteenth Amendment ... would presumably prohibit state courts from depriving persons of liberty or property as punishment for criminal conduct except to the extent authorized by state law.” Whalen v. United States, 445 U.S. at 690 n. 4, 100 S.Ct. at 1437 n. 4.
Two, the Supreme Court has adopted the rule of lenity as a tool of statutory construction. Busic v. United States, 446 U.S. 398, 100 S.Ct. 1747, 64 L.Ed.2d 381 (1980). The rule requires that courts resolve ambiguities in a penal code in the defendant’s favor. Whalen v. United States, supra. The Court first applied the rule of lenity to a multiple punishment issue in Bell v. United States, 349 U.S. 81, 75 S.Ct. 620, 99 L.Ed. 905 (1955), although the constitutional issue of double jeopardy did not arise. See also Bifulco v. United States, 447 U.S. 381, 100 S.Ct. 2247, 65 L.Ed.2d 205 (1980); Simpson v. United States, 435 U.S. 6, 98 S.Ct. 909, 55 L.Ed.2d 70 (1978); United States v. Bass, 404 U.S. 336, 92 S.Ct. 515, 30 L.Ed.2d 488 (1971); Ladner v. United States, 358 U.S. 169, 79 S.Ct. 209, 3 L.Ed.2d 199 (1958). The rule of lenity is a corollary of the rule of statutory construction that requires penal statutes to be construed against the government. 3 C. Sands, Sutherland Statutes and Statutory Construction § 59.03 (4th ed. 1974). The rule of lenity applies not only to interpretations of the [1268]*1268substantive prohibitions, but also to the penalties they impose. Bifulco v. United States, supra.
We have likewise recognized the rule of lenity as a tool to be used in interpreting penal statutes. Colorado criminal statutes are to be strictly construed in favor of the accused. People v. Roybal, 618 P.2d 1121 (Colo.1980); Pigford v. People, 197 Colo. 358, 593 P.2d 354 (1979); People v. Cornelison, 192 Colo. 337, 559 P.2d 1102 (1977). “This rule of statutory construction is very similar to the federal rule of lenity.” People v. Roybal, 618 P.2d at 1125.
We adopt the rule of lenity as the principle to be used in analyzing the defendant’s position in the case. Therefore, we need not address the issues of whether the defendant’s dual murder convictions for one homicide violate the due process or double jeopardy provisions of the United States and Colorado Constitutions.
Under the rule of lenity the legislature may define offenses and prescribe sentences and the courts are required to adhere to the legislative schemes for convictions and punishments that are clear and unmistakable. However, the courts are authorized to review multiple conviction and punishment cases and invalidate convictions and/or punishments whenever the evidence for their existence is less than clear. See Westen, Three Faces of Double Jeopardy: Reflections on Government Appeals of Criminal Sentences, 78 Mich.L.Rev. 1001, 1026-27 (footnotes omitted) (1980).
We now turn to a resolution of the precise issue before us. The defendant contends that the trial court erred in entering judgments and sentences on two counts of first-degree murder for a single killing.
The Colorado Criminal Code provides that first-degree murder may be committed in four ways.8 The shorthand definitions are (a) murder after deliberation, (b) felony murder, (c) causing the death of an innocent person who is convicted and executed as a result of perjury or subornation of perjury, and (d) extreme indifference murder.
[1269]*1269The jury found the defendant guilty of both felony murder, in which sexual assault on a child was the underlying felony, and murder after deliberation in the killing of Michelle Conley. The defendant was sentenced to life imprisonment. Apparently, the trial court imposed two concurrent life sentences. The issue thus presented is whether both judgments of conviction may be allowed to stand.
C.
The most difficult problem presented by this appeal is whether the defendant committed one or two offenses. We are persuaded that the evidence could establish, as it does in this ease, that a single act of killing could be committed both after deliberation and in the perpetration of one of the enumerated felonies. The crime charged here was first-degree murder. The People filed an information containing two counts. Murder after deliberation was charged in count one and felony murder was alleged in count two. The charges are a reflection of the People’s theories of first-degree murder. The conduct prohibited by the Colorado Criminal Code is first-degree murder. Murder after deliberation and felony murder are not denominated by the Code as separate and independent offenses, but only ways in which criminal liability for first-degree murder may be charged and prosecuted.9
The legislature has not manifested any clear intent that a defendant could be con-vieted of more than one kind of first-degree murder where there is but one victim. The rule of lenity requires that the first-degree murder statute be construed to favor the defendant. That construction is that a defendant can be convicted only of one first-degree murder for one killing.
D.
The next question to be answered is whether dual convictions and concurrent life sentences constitute multiple punishment. The People contend that since the life sentences are to run concurrently, the ultimate effect is that the defendant received only one sentence and any sentencing error is, therefore, harmless. We disagree. There are a significant number of important collateral consequences for a felony conviction beyond that of the sentence imposed. Villafranca v. People, 194 Colo. 472, 573 P.2d 540 (1978). See also People v. Stewart, 400 Mich. 540, 256 N.W.2d 31 (1977). In Villairanea, we held that an erroneous conviction for one offense should not be left intact merely because the sentence imposed is to run concurrently with the sentence imposed for another offense arising out of the same transaction. Therefore, we conclude that two convictions for one killing result in enhanced collateral punishment.
Some courts have reached a conclusion different from our decision.10 However, the better reasoned cases have reached a [1270]*1270result consistent with our decision.11 Only one conviction of murder is permitted for [1271]*1271the killing of one victim. There is only one crime of first-degree murder, although there are four ways of committing the crime. Only one judgment of conviction and one punishment can be imposed for one first-degree murder. It would be a strange system of justice that would permit the defendant to be sentenced to two concurrent life sentences for the killing of one person. See Gray v. State, 463 P.2d 897 (Alaska 1970). The defendant’s convictions must be vacated because enhanced collateral punishment has been imposed resulting from more convictions than are permitted under section 18-3-102(3), C.R.S.1973 (1978 Repl.Vol. 8).
III.
In order to insure that the intent of the statute is preserved and to make clear the effect of our decision, we believe it appropriate to establish the procedural steps necessary to achieve that goal. The prosecution should be allowed to charge multiple theories of first-degree murder in separate counts.12 The prosecution may, but should not be required to, elect among theories after the evidence is closed.13 If there is sufficient evidence in the record, all theories charged should be submitted to the jury for a special verdict. The jury should be informed that the defendant is charged with one crime, first-degree murder. The jury’s special verdict should indicate which theories of first-degree murder, if any, have been proved by the evidence.14 This procedure will avoid substantial double jeopardy questions being raised if the jury is forced to acquit on one theory in order to convict on a theory which is found to be erroneous on appeal. If the jury is asked only for a general verdict, then on appeal there is no way to decide upon which theory the jury reached its verdict. In such a case an error relating to either count would void the entire verdict.
IV.
The defendant’s convictions for two counts of first-degree murder are vacated. [1272]*1272This case is remanded to the district court with directions to prepare an amended judgment of conviction, sentence, and mitti-mus to reflect that the defendant has been convicted of murder in the first-degree in violation of section 18-3-102, C.R.S.1973 (1978 Repl.Vol. 8), and is sentenced to life imprisonment.
LOHR, J., specially concurs.
ROVIRA and QUINN, JJ., do not participate.