Slip Mahoney
Leo Gorcey
Sach Jones
Huntz Hall
Digger
Eddie Gribbon
Karl
Hans Schumm
Franz Drum
Gene Roth
T.P. Williams
Emmett Vogan
Messenger Boy
Buddy Gorman
Dr. Franz Lieber
John Bleifer
Ryan, Building Manager
William Ruhl
Dr. Latka
Leonid Snegoff
Gabe Moreno
Gabriel Dell
Count Boris Petrov
Martin Kosleck
Terrence Mahoney
Paul Harvey
Teresa Mahoney
Amelita Ward
Whitey
William Benedict
Chuck
David Gorcey
Sandra Hasso
Jacqueline Dalya
Butch
Benny Bartlett
Director
William Beaudine
Screenplay
Tim Ryan
Production Manager
William A. Calihan Jr.
Sound Recordist
Earl Sitar
Editor
William Austin
Producer
Jan Grippo
Story
Talbert Josselyn
Director of Photography
Marcel Le Picard
Set Decoration
Raymond Boltz Jr.
Art Direction
Dave Milton
Music Director
Edward J. Kay
Supervising Film Editor
Otho Lovering
Edmond Seward