Bill Crane, a private detective with no weakness as an investigator but large ones for blondes and straight-whiskey, gets a call from his attorney friend, Charles Frazee, with a request to find evidence that will free Robert Westland, who is under death sentence for murdering his wife. Crane immediately runs into a barrage of machine-gun fire, and a blonde, Agatha Hogan, only slightly less dangerous. After a night of wine, women and song, Crane picks up a clue that may aid Wstland. With the help of a deep-sea diver, a stop watch, and a taxicab driver, he is sprinting after the real culprit...just as Westland is starting his last mile to the electric chair.