Elisha Cook Jr. carved a unique niche in classic Hollywood as the quintessential nervous, twitchy sidekick whose presence added tense energy and uneasy charm. His turn as the soft-spoken, slavish Wilmer Cook in John Huston’s The Maltese Falcon remains a standout example of how Cook could infuse even a minor villain with memorable creepiness and vulnerability. In Howard Hawks’s The Big Sleep, he slipped seamlessly into the shadowy world of Raymond Chandler’s Los Angeles, delivering a quietly unsettling performance as the cowardly Joe Brody. Cook’s subtle facial expressions and distinctive voice brought a delicate balance of menace and fragility to his roles, often playing characters on the edge of danger or sanity. He became a go-to actor for directors seeking a reliable yet unforgettable figure lurking in the background, contributing to the fabric of film noir that continues to captivate audiences. Beyond those titles, Cook’s ability to embody the archetype of the jittery outsider made him one of the era’s most enduring character actors.