Although he often returned to or parodied his gangster parts, Robinson avoided typecasting by playing an earnest physician (Dr. Ehrlich's Magic Bullet), FBI agent (Confessions of a Nazi Spy), sea captain (The Sea Wolf), insurance adjuster Barton Keyes (Double Endemnity), and guilt-ridden father Joe Keller (the 1948 film of Arthur Miller's All My Sons). Later shifting into mostly supporting roles and cameos, he played skeptical, calf-worshipping Dathan in The Ten Commandments, a Nobel prize nominee in The Prize (with Paul Newman), the veteran poker player opponent in The Cincinatti Kid, and his final role, the old man who knows the secret of Soylent Green.