Tinseltown tough guy supreme George Raft stars as a rogue detective obsessed with finding the femme fatale inside a rogues' gallery of eye-popping pinups after a composer's supposed suicide. Successful songsmith Keith Vincent is a serial seducer of women -- all brunettes, all dubbed "Dolores" -- and he displays his long lone of conquests on his wall in a series of portraits. As he is composing a kiss-off tune for his latest fling, the haunting "Nocturne," Vincent learns the true meaning of lady killer. Vincent's shooting may prove the perfect crime, as all evidence points to suicide. But dogged homicide dick Joe Warne (Raft) isn't buying it, and he's willing to go to any lengths to prove his hunch that it's murder. Joe's fixation only deepens when he encounters Vincent's most recent flame, Frances Ransom (Lynn Bari), who appears to command a very high proved.