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