Grissom v. Carpenter, 902 F.3d 1265

Background

Petitioner Wendell Grissom burglarized a rural Oklahoma home, shot two women (one fatally), and fled; he was arrested shortly after and convicted of first-degree murder and related felonies; jury imposed death.
At trial defense conceded guilt and focused penalty-phase mitigation (alcoholism, depression, childhood abuse, prior head injuries); two mental-health experts (psychologist and psychiatrist) testified but no neuropsychological testing was presented.
On direct appeal Grissom submitted a neuropsychologist’s report diagnosing dementia due to multiple etiologies and indicating frontal/temporal deficits; OCCA rejected ineffective-assistance claim and denied relief.
In federal habeas proceedings Grissom argued (1) trial counsel were ineffective for failing to investigate/present neuropsychological evidence of organic brain damage; (2) trial court erred and counsel were ineffective regarding voluntary-intoxication and lesser-included-offense instructions; and (3) cumulative error.
The Tenth Circuit affirmed denial of habeas relief, applying AEDPA deference to OCCA’s Strickland analysis and rejecting claims on prejudice and sufficiency grounds.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Ineffective assistance at penalty phase for failing to investigate/present neuropsychological evidence of organic brain damage	Grissom: counsel missed "red flags" (birth oxygen loss, multiple head injuries, chronic alcoholism); neuropsychological testing would show severe permanent frontal/temporal deficits and change sentencing outcome.	State/OCCA: trial mitigation already presented life-history and mental-health evidence; additional neuropsychology largely duplicated existing narrative and would not have changed balancing of aggravators/mitigators.	Affirmed: OCCA reasonably applied Strickland; no reasonable probability of different sentence given record and aggravating evidence.
Failure to instruct on voluntary intoxication and lesser-included offenses; ineffective assistance for not requesting them	Grissom: instructions were inadequate/confusing; counsel should have requested lesser-included instructions tied to intoxication; evidence supported intoxication defense.	State/OCCA: counsel repeatedly conceded guilt and pursued sentencing mitigation strategy; evidence did not support finding defendant so intoxicated he could not form specific intent, nor would second-degree murder instruction be reasonable.	Affirmed: no reversible error or prejudice—intoxication instruction not warranted, lesser-included instruction not supported by evidence, and counsel’s omission not prejudicial.
Cumulative error (aggregate of the above plus victim-impact issues)	Grissom: combined errors undermined reliability of capital sentence (missing intoxication/lesser instructions; missing neuropsych. mitigation; emotional victim-impact testimony).	State/OCCA: identified errors were harmless individually; their cumulative effect did not render trial fundamentally unfair.	Affirmed: even assuming certain errors, the aggregated constitutional errors did not fatally infect trial or sentencing.

Key Cases Cited

Strickland v. Washington, 466 U.S. 668 (establishes two-part ineffective-assistance test)
Beck v. Alabama, 447 U.S. 625 (jury must be allowed to consider lesser-included noncapital verdict when supported by evidence in capital cases)
Cupp v. Naughten, 414 U.S. 141 (habeas relief for erroneous jury instruction requires showing violation of due process under the Fourteenth Amendment)
Littlejohn v. Royal, 875 F.3d 548 (10th Cir. 2017) (assessing prejudice in penalty-phase omission claims by considering totality of trial and habeas evidence)
Fairchild v. Trammell, 784 F.3d 702 (10th Cir. 2015) (lesser-included-offense status is a matter of state law)
Hanson v. Sherrod, 797 F.3d 810 (10th Cir. 2015) (cumulative-error review under due process)
Miller v. Champion, 262 F.3d 1066 (10th Cir. 2001) (standard of de novo review when state courts do not address merits)