Edgar Kennedy
as Detective Sweeney
Barbara Lawrence
as Barbara Henshler
Torben Meyer
as Dr. Schultz
Rudy Vallee
as August Henshler
Lionel Stander
as Hugo Standoff
Alan Bridge
as House Detective
Kurt Kreuger
as Tony Windborn
Julius Tannen
as O'Brien
Linda Darnell
as Daphne De Carter
Rex Harrison
as Sir Alfred De Carter