Cast
Ralph Bellamy
Ellery Queen
Paul Hurst
Page
Tom Dugan
Lou Thomas
Olin Howland
Dr. Williams
James Burke
Sgt. Velie
Charley Grapewin
Insp. Queen
Mona Barrie
Nurse Marian Tracy
George Zucco
Dr. Edwin L. Jannery
Blanche Yurka
Mrs. Augusta Stack
Jean Fenwick
Alice Stack
Pierre Watkin
Crothers
Byron Foulger
Hospital Orderly (uncredited)
Margaret Lindsay
Nikki Porter
Leon Ames
John Stack
Charlotte Wynters
Miss Fox
Dennis Moore
Dr. Dunn