Cuthbert Greenway / Dr. Ralph Greenway

Bud Abbott

Acting

Horatio Prim

Lou Costello

Acting

Melody Allen

Marjorie Reynolds

Acting

Mildred Dean

Binnie Barnes

Acting

Sheldon Gage

John Shelton

Acting

Emily

Gale Sondergaard

Acting

June Prescott

Lynn Baggett

Acting

Thomas Danbury

Jess Barker

Acting

Nora O'Leary

Ann Gillis

Acting

Lt. Mason

Donald MacBride

Acting

Sgt. Conners

William Hall

Acting

Maj. Putnam

Robert Barrat

Acting

Sgt. Makepeace

Rex Lease

Acting

Dandy at Party (uncredited)

Kirk Alyn

Acting

Second Sergeant (uncredited)

Harry Brown

Acting

Museum Guard (uncredited)

George M. Carleton

Acting

Bill - Museum Guard (uncredited)

Wheaton Chambers

Acting

Party Guest (uncredited)

James Conaty

Acting

Dandy at Party (uncredited)

John Crawford

Acting

Leigh - Traitor (uncredited)

Vernon Downing

Acting

Bessie - Danbury's Maid (uncredited)

Marjorie Eaton

Acting

Dandy at Party (uncredited)

Myron Healey

Acting

Cranwell - Traitor (uncredited)

Boyd Irwin

Acting

Mr. Dibbs - Museum Curator (uncredited)

Selmer Jackson

Acting

Danbury Servant (uncredited)

William H. O'Brien

Acting

Dandy at Party (uncredited)

Scott Thomson

Acting

Motorcycle Rider (uncredited)

Harry Woolman

Crew