Milton Berle as H.H. Van Buren

Brenda Joyce as Betty Woods

John Shelton as David Courtiand

John Carradine as Norbert

Willie Best as Euclid White Brown

Edmund MacDonald as Jerry Gilpin

Arthur Hohl as Inspector Norris

Renie Riano as Stella (aka Meg)

Grady Sutton as Jonathan Flack

Milton Parsons as Dr. Walter Bascomb

Harry Hayden as Conroy

Charles Halton as Mark Gruber

Abner Biberman as Mack Wolf

Frank Faylen as Curly

George Offerman, Jr. as Chuck