The Phantom Thief

Frank Sully

as Detective Sergeant Matthews

Joseph Crehan

as 'Jumbo' Madigan - Pawnbroker

George E. Stone

as The Runt

Murray Alper

as Eddie Alexander, Chauffeur

Jeff Donnell

as Anne Parks Duncan

Chester Morris

as Horatio 'Boston Blackie' Black

Marvin Miller

as Dr. Nejino

Richard Lane

as Inspector John Farraday

Dusty Anderson

as Sandra

Wilton Graff

as Rex Duncan