Donald Cook

Ellery Queen

Helen Twelvetrees

Stella Godfrey

Berton Churchill

Judge Macklin

Frank Sheridan

Walter Godfrey

Harry Stubbs

Sheriff Moley

Guy Usher

Inspector Queen

Huntley Gordon

David Kummer

Jack La Rue

Gardner

Betty Blythe

Mrs. Godfrey

George Cleveland

Jorum

Lewis D. Collins

Director

Frederic Dannay

Novel

Manfred Lee

Novel

Albert DeMond

Screenplay