Ralph Bellamy

Ellery Queen

Margaret Lindsay

Nikki Porter

Charley Grapewin

Insp. Queen

Anna May Wong

Lois Ling

James Burke

Sgt. Velie

Eduardo Ciannelli

Count Brett (as Edward Ciannelli)

Frank Albertson

Sanders

Ann Doran

Sheila Cobb

Noel Madison

Gordon Cobb

Charles Lane

Doc Prouty

Russell Hicks

Harry Walsh

Tom Dugan

McGrath

Mantan Moreland

Roy

Theodore von Eltz

Jim Ritter

James P. Hogan