Stronger Than Desire (1939)

Wealthy socialite Elizabeth Flagg is courted by persistent Michael McLain, despite her protests that she is a married woman. McLain is just charming enough to attract Elizabeth into a series of harmless dalliances. But when he tries to extort money from her, they quarrel violently and she shoots at him with his own gun. McLain's wife Eva is arrested for his murder. With strong circumstantial evidence against her, Eva seems sure to be convicted... until the guilt-ridden Elizabeth persuades her own husband, defense attorney Tyler Flagg, to take the woman's case. He does so, but without knowing of his wife's involvement.