Whether the prosecution could introduce evidence that Molineux had allegedly poisoned Henry C. Barnet to prove that he murdered Mrs. Adams while attempting to poison Cornish.
Holding
No. The alleged Barnet poisoning was an independent crime and did not fall within a recognized exception to the rule barring other-crimes evidence.
Reasoning
The general rule forbids the prosecution from proving uncharged crimes merely to suggest that the accused is the kind of person likely to commit the charged offense. That practice unfairly burdens the defendant with answering accusations outside the indictment and invites a verdict based on prejudice rather than proof beyond a reasonable doubt of the crime being tried.
Other-crimes evidence may be admitted when it genuinely tends to establish motive, intent, absence of mistake or accident, a common plan or scheme, or the defendant’s identity. These are limited exceptions, not devices for introducing propensity evidence under a different name.
The alleged motives were separate. The prosecution claimed that Molineux targeted Barnet from jealousy arising from Barnet’s relationship with a woman Molineux loved, while it claimed he targeted Cornish from hostility generated by disputes at the athletic club. Proof of a motive to harm Barnet therefore did not help establish a motive to harm Cornish.
The Barnet evidence was not needed to establish intent or to negate accident. The package sent to Cornish contained a rare poison concealed in a harmless headache remedy and presented as a Christmas gift. If Molineux sent that package, its design itself supplied a compelling inference of murderous intent and left no realistic issue of innocent mistake or accident.
Nor did the two alleged poisonings constitute a common plan or scheme. Similar methods alone do not create a legally sufficient connection between otherwise distinct offenses. The crimes occurred weeks apart, involved different victims and alleged motives, and were not shown to be steps in a single undertaking or directed toward a shared objective.
The evidence likewise did not identify Molineux as the sender of the Cornish package in the legally required sense. Its force depended on the forbidden inference that a person who committed one similar poisoning was probably the perpetrator of another. The similarities between the two episodes did not establish the distinctive, direct connection necessary to make one offense evidence of the other.