People v. Thames, 2015 CO 18

Background

In 2012 investigators interrogated Douglas Thames (then incarcerated for an unrelated murder) after DNA linked him to a 1994 homicide; the interrogation was video-recorded and lasted ~1 hour 14 minutes.
Investigators gave a standard oral Miranda advisement ~4 minutes into the interview; Thames said he understood and signed a written waiver form.
During questioning Thames denied knowing the victim, denied sexual relations or visiting her apartment, and offered an alibi for the relevant night.
Thames moved to suppress the statements, arguing his waiver was not voluntary, knowing, or intelligent; defense presented a speech-language expert (Aneloski) who testified Thames scored very low on a "listening to spoken paragraphs" subtest and thus had trouble with complex/abstract spoken material.
The trial court found waiver voluntary but ruled the People failed to prove by a preponderance that Thames knowingly and intelligently waived Miranda rights, relying heavily on the expert; it suppressed the statements and the People filed an interlocutory appeal.
The Colorado Supreme Court reversed, concluding under the totality of the circumstances Thames knowingly and intelligently waived his Miranda rights and rejecting the trial court's emphasis on the expert opinion and investigatory tactics.

Issues

Issue	Plaintiff's Argument (People)	Defendant's Argument (Thames)	Held
Whether Thames knowingly and intelligently waived Miranda rights	Thames verbally acknowledged the warnings, signed a waiver, responded coherently, and had prior criminal-system experience — waiver therefore valid	Expert evidence showed Thames had significant difficulty understanding spoken paragraphs and abstract concepts, so he could not make a knowing, intelligent waiver	Waiver was knowing and intelligent under the totality of circumstances; suppression reversed
Whether the investigators' deceptive/limited disclosure about interview purpose undermines the weight of Thames's expressed understanding	Investigator tactics do not negate a knowing/ intelligent waiver; subject-matter awareness irrelevant to waiver	Trial court found tactics reduced probative value of Thames saying he understood	Court held such tactics were not relevant to whether waiver was knowing/intelligent and trial court erred to treat them as dispositive
Proper weight of expert testimony on comprehension for waiver analysis	Expert testimony is one factor but not dispositive; minimal or rudimentary understanding suffices	Expert testimony established a comprehension deficit that precluded a knowing/intelligent waiver	Expert testimony did not preclude finding of minimal understanding sufficient for waiver; Al-Yousif analogous
Whether interlocutory appeal under §16-12-102(2)/C.A.R.4.1 was appropriate (dissent)	People argued statements would be used in case-in-chief (denials and demeanor) and thus warranted interlocutory review	Dissent argued statements are denials useful only for impeachment or not a "substantial part of the proof," so appeal jurisdiction lacking	Majority exercised interlocutory jurisdiction and reached the waiver merits; Justice Marquez dissented on jurisdictional grounds

Key Cases Cited

Miranda v. Arizona, 384 U.S. 436 (Miranda warnings required and waiver standards)
Berghuis v. Thompkins, 560 U.S. 370 (suspect may reevaluate and decide to speak during interrogation)
People v. Al-Yousif, 49 P.3d 1165 (Colo. 2002) (minimal/rudimentary understanding of rights can suffice for a knowing and intelligent waiver)
People v. Platt, 81 P.3d 1060 (Colo. 2004) (prosecution must prove waiver voluntary, knowing, intelligent by preponderance; totality of circumstances test)
People v. Fordyce, 612 P.2d 1131 (Colo. 1980) (expert testimony that defendant impaired by medication supported suppression where uncontroverted)
People v. Kaiser, 32 P.3d 480 (Colo. 2001) (factors for evaluating Miranda waiver)
People v. Aguilar-Ramos, 86 P.3d 397 (Colo. 2004) (appellate review standards for waiver factual findings)