Slip Mahoney
Leo Gorcey
Sach
Huntz Hall
Hugo
Skelton Knaggs
Otto
William Yetter Sr.
Mrs. Hoskins
Minerva Urecal
Mike Barton
Chester Clute
Father
Pat Goldin
Young Man
Robert Coogan
Gabe Moreno
Gabriel Dell
Dr. Druzik
Alan Napier
Nancy Marlowe
Jane Adams
Whitey
William Benedict
Louie
Bernard Gorcey
Atlas the Monster
Glenn Strange
Butch
Benny Bartlett
Chuck
David Gorcey
Makeup Artist
Jack Pierce
Director
Jean Yarbrough
Screenplay
Charles R. Marion
Story
Music Director
Edward J. Kay
Producer
Jan Grippo
Director of Photography
Marcel Le Picard
Editor
William Austin
Art Direction
Dave Milton
Set Decoration
Raymond Boltz Jr.
Production Supervisor
Allen K. Wood
Assistant Director
William A. Calihan Jr.
Sound
Tom Lambert
B.J. Remington
Supervising Film Editor
Otho Lovering
Script Supervisor
Ilona Vas
Camera Operator
William Margulies
Dean Spencer
Grip
Harry Lewis
Gaffer
Lloyd Garnell