Moe
Moe Howard
Larry
Larry Fine
Perkins, the Secretary
Shirley Patterson
Devil Costume Spy
Heinie Conklin
Skeleton Costume Spy
William Kelley
Curly
Curly Howard
Prof. J. O. Dunkfeather
Lew Kelly
Wilson, the Reporter
Stanley Brown
Graves, the Inventor
Theodore Lorch
Graves' Valet
Charles Middleton
Spy Leader
Stanley Blystone
Ultra-Thin Housewife
Helen Servis
Plumpish Housewife
Symona Boniface
Director
Del Lord
Producer
Writer
Clyde Bruckman
Hugh McCollum
Cinematography
John Stumar
Editor
Paul Borofsky
Art Direction
Carl Anderson