Humphrey Bogart in a cast list at the trailer's end. Robinson's role is evocative of Duke Mantee in "The Petrified Forest" (1936), a Bogart leading man breakthrough the studio had originally earmarked for Robinson. The enormous success of "Casablanca" redefined Bogart's career. For the first time, Bogart could be cast successfully as both a tough, strong man and vulnerable love interest. Despite his elevated standing, he did not yet have a contractual right of script refusal. When he got weak scripts he simply dug in his heels and locked horns again with the front office, as he did on the film "Conflict"
Humphrey Bogart among others. In "Black Legion" (1937), for a change, he played a good man caught up and destroyed by a racist organization, a movie Graham Greene described as "intelligent and exciting, if rather earnest". In 1938, Warner Bros. put Bogart in a "hillbilly musical" called "Swing Your Lady" as a wrestling promoter; he later apparently considered this his worst film performance. In 1939, Bogart played a mad scientist in "The Return of Doctor X", his only horror film. He cracked, "If it'd been Jack Warner's blood ... I wouldn't have minded so much. The trouble was they were drinking mine