as Hal Moffet AKA 'The Creeper'

as Clifford Scott

as Virginia Rogers Scott

as Helen Paige

as Police Captain M. J. Donelly

as Police Lieutenant Gates

as Young Hal Moffet

as Joan Bemis (as JaNelle Johnson)

as Mary Ann Obringer (uncredited)

as Police Lieutenant / voice of radio announcer (uncredited)

as Police Commissioner Salisbury (uncredited)

as Professor Cushman (uncredited)

as Policeman at Helen's Apartment (uncredited)

as Nurse (uncredited)

as Pawnbroker (uncredited)

as Policeman at Helen's Apartment (uncredited)

as Police Dispatcher (uncredited)

as Mr. Haskins - Grocer (uncredited)

as Detective at Helen's Apartment (uncredited)

as Jeweler (uncredited)