Super-Sleuth

Jack Oakie

Bill Martin

Ann Sothern

Mary Strand

Eduardo Ciannelli

Professor Herman

Alan Bruce

Larry Frank, a movie stand-in

Edgar Kennedy

Police Lt. Garrison

Joan Woodbury

Doris Duane, a film actress

Bradley Page

Ralph Waring

Paul Guilfoyle

Gibbons, a film director

Willie Best

Warts, Martin's manservant

William Corson

Beckett

Alec Craig

Eddie - Doorman

Paul Hurst

Motorcycle Cop

George Rosener

Policeman

Ann Hovey

Script Girl

Marie Marks

Hair Dresser

Al Klein

Cameraman

Fred Kelsey

Jailer

Robert Emmett O'Connor

Casey

Philip Morris

Sullivan

Dick Rush

Grimes