Soon after a young woman breaks off her engagement to a doctor, the doctor is found murdered. Suspicion falls on his ex-fiancé and a pilot with a checkered past.

A blackmailing doctor is shot and stumbles into the street and is promptly run over by a taxicab. This gives the police all the suspects they can sift through: the doctor's girlfriend. the girlfriend's boyfriend, the taxicab driver, a sneak thief, a doorman, a gangster, and an elderly patient of the doctor.—Les Adams <[email protected]>