Cuthbert Greenway / Dr. Ralph Greenway
Horatio Prim
Melody Allen
Mildred Dean
Sheldon Gage
Emily
June Prescott
Thomas Danbury
Nora O'Leary
Lt. Mason
Sgt. Conners
Maj. Putnam
Sgt. Makepeace
Dandy at Party (uncredited)
Second Sergeant (uncredited)
Museum Guard (uncredited)
Bill - Museum Guard (uncredited)
Party Guest (uncredited)
Dandy at Party (uncredited)
Leigh - Traitor (uncredited)
Bessie - Danbury's Maid (uncredited)
Dandy at Party (uncredited)
Cranwell - Traitor (uncredited)
Mr. Dibbs - Museum Curator (uncredited)
Danbury Servant (uncredited)
Dandy at Party (uncredited)
Motorcycle Rider (uncredited)
