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Wiseguy con man Jimmy Corrigan (James Cagney) operates an agency that finds the heirs of wealthy persons who have recently met their maker without having drawn up a will -- but if he can't find any family members, he instead will enlist a friend to pose as the heir. When Jimmy's assistant and love interest, Joan Martin (Bette Davis), quits because his business isn't ethical and goes to work for his competitor, Charles Wallingham (Alan Dinehart), Jimmy sets out to prove his worth. Wikipedia