v. Rios, 2020 COA 2

A large fight at a park: Marty Vigil pointed a black BB gun at a victim and threatened to shoot him; police later recovered a BB gun from a trash can after observing Gilberto Rios walk away and discard a dark object.
Vigil was arrested and pleaded guilty to menacing; Rios was charged only as an accessory to Vigil’s menacing.
At Rios’s trial the prosecutor introduced a redacted copy of Vigil’s guilty plea and called Vigil to testify; Vigil was largely uncooperative but acknowledged signing the plea when confronted.
The prosecutor relied on Vigil’s guilty plea as substantive proof that the antecedent offense (menacing) occurred, an element of the accessory charge against Rios.
Prosecutor elicited testimony that Rios refused to answer officers at the scene (noncustodial), and later referenced difficulties obtaining identifying information from Rios in closing; defense repeatedly moved for mistrial on Fifth Amendment grounds.
The jury convicted Rios of accessory to menacing; Rios appealed arguing (1) improper use of codefendant’s guilty plea as substantive evidence, (2) improper comments on his refusal to speak to police, and (3) cumulative error.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Admissibility of codefendant’s guilty plea as substantive evidence	The People: Vigil’s guilty plea is a reliable admission of factual guilt and is admissible to prove the antecedent offense element of the accessory charge.	Rios: General rule bars using a codefendant’s guilty plea as substantive evidence of the defendant’s guilt; admission prejudices the jury.	Court: Where defendant is charged only as an accessory (not jointly charged in same offense), a codefendant’s plea is admissible to prove the antecedent crime; the usual rule against accomplice-plea use does not apply.
Prosecutor’s comments and elicitation about Rios’s refusal to speak to officers	The People: Rios’s silence occurred pre-arrest/noncustodially and may be used for impeachment; comments about difficulty obtaining identifying information were permissible.	Rios: Prosecutor’s questions and closing argument impermissibly commented on and used his Fifth Amendment right to remain silent, warranting mistrial.	Court: Rios was noncustodial when he refused to answer; elicitation and limited references were not constitutionally barred and the court did not abuse its discretion in denying mistrials.
Cumulative error	The People: No reversible errors occurred, so cumulative-error doctrine does not apply.	Rios: Aggregated errors require reversal.	Court: No individual errors; thus no cumulative error—judgment affirmed.

Menna v. New York, 423 U.S. 61 (1975) (a counseled guilty plea is an admission of factual guilt and can remove factual-guilt issue).
Cook v. People, 56 Colo. 477, 138 P. 756 (Colo. 1914) (admissions by one jointly indicted are not admissible against codefendants absent presence/assent).
Paine v. People, 106 Colo. 258, 103 P.2d 686 (Colo. 1940) (distinguishes jointly charged co-defendant convictions from cases where one is principal and other an accessory).
United States v. DeLucca, 630 F.2d 294 (5th Cir. 1980) (concern that an accomplice’s plea can create guilt-by-association).
Krulewitch v. United States, 336 U.S. 440 (1949) (warning against jurors inferring guilt by association).
People v. Chavez, 190 P.3d 760 (Colo. App. 2007) (pre-Miranda silence may be used to impeach).
People v. Vigil, 718 P.2d 496 (Colo. 1986) (denial of mistrial affirmed where trial court offered curative instruction and objection was handled).
People v. Brunner, 797 P.2d 788 (Colo. App. 1990) (accomplice’s guilty plea may be admissible for impeachment or limited purposes).