Commonwealth v. Morgan, 951 N.E.2d 14

Morgan was convicted of first-degree murder under a felony-murder theory; armed assault in a dwelling; unlawful possession of a firearm; and unlawful possession of ammunition.
Commonwealth argued Morgan acted as a joint venturer with Middlemiss, tried separately.
Morgan, represented by new counsel on appeal, challenged denial of his motion to suppress and admission of prior bad acts and third-party culprit evidence.
Morgan did not request a jury instruction on marijuana intoxication affecting specific intent for murder or underlying felony for felony-murder.
During trial, the Commonwealth introduced prior bad act evidence (vehicle break-ins) to show motive; the defense sought limiting instructions.
The trial judge admitted third-party culprit evidence relating to Jesse Do; Morgan challenged its admissibility.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Was Morgan's Rosario-based suppression waiver voluntary?	Morgan argues delay coerced waiver.	Morgan contends delay negates voluntariness.	No error; waiver voluntary; statements admissible.
Was admission of prior bad act evidence harmless or prejudicial?	Evidence showed motive for crime.	Evidence denied proper limiting instruction; prejudice potential.	Admissible for motive with limiting instructions given; no miscarriage of justice.
Did the court err in admitting third-party culprit evidence about Do?	Do’s armed robberies show Do’s motive and connection.	Do’s acts highly probative and closely connected; Do was the true culprit.	No error; Do’s acts lacked substantial connecting links; evidence excluded appropriately.
Should the jury have received a marijuana intoxication instruction for deliberate premeditation?	Marijuana use could negate specific intent.	Intoxication could negate required intent; instruction necessary.	No instruction required; no substantial likelihood of miscarriage.
Does the record support relief under G. L. c. 278, § 33E?	Court should reduce or grant new trial.	Relief warranted due to errors.	No basis for relief; judgments affirmed.

Commonwealth v. Helfant, 398 Mass. 214 (Mass. 1986) (evidence of prior bad acts must have probative value and not be prejudicial)
Commonwealth v. Robidoux, 450 Mass. 144 (Mass. 2007) (limits on admissibility of prior crimes; relevancy and prejudice weighed)
Commonwealth v. DelValle, 443 Mass. 782 (Mass. 2005) (prior act relevance to state of mind and motive)
Commonwealth v. Rosa, 422 Mass. 18 (Mass. 1996) (third-party culprit defense as a valid approach)
Commonwealth v. Silva-Santiago, 453 Mass. 782 (Mass. 2009) (limits on third-party culprit evidence; substantial linking links required)
Commonwealth v. Harris, 395 Mass. 296 (Mass. 1985) (motive and third-party evidence considerations)
Commonwealth v. Keizer, 377 Mass. 264 (Mass. 1979) (relevance and admissibility standards for third-party evidence)
Commonwealth v. McCowen, 458 Mass. 461 (Mass. 2010) (limiting instruction timing for bad act evidence)
Commonwealth v. Vives, 447 Mass. 537 (Mass. 2006) (dismissal of redundant predicate felony after felony-murder conviction)
Commonwealth v. Garcia, 443 Mass. 824 (Mass. 2005) (evidentiary findings and suppression credibility)