Boris Karloff
Prof. Nathaniel Billings
                                    Peter Lorre
Dr. Arthur Lorentz
                                    Maxie Rosenbloom
Maxie
                                    Jeff Donnell
Winnie Slade
                                    Larry Parks
Bill Layden
                                    Maude Eburne
Amelia Jones
                                    Don Beddoe
J. Gilbert Brampton
                                    George McKay
Ebenezer
Eddie Laughton
Mr. Johnson
                                    Frank Puglia
Silvio Baciagalupi
                                    Frank Mitchell
Officer Fred
                                    James C. Morton
Trooper Quincy
                                    Frank Sully
Officer Joe Starrett
                                    Patrick McVey
Munitions Plant Road Guard
                                    Robert Emmett Keane
Alarm Clock Salesman
Le Château des loufoques
Released