Ralph Bellamy
Ellery Queen
Tom Dugan
McGrath
Ann Doran
Sheila Cobb
Charley Grapewin
Insp. Queen
Anna May Wong
Lois Ling
Russell Hicks
Harry Walsh
James Burke
Sgt. Velie
Eduardo Ciannelli
Count Brett (as Edward Ciannelli)
Margaret Lindsay
Nikki Porter
Charles Lane
Doc Prouty
Frank Albertson
Sanders
Theodore von Eltz
Jim Ritter
Mantan Moreland
Roy
Noel Madison
Gordon Cobb