Ellery Queen

Ralph Bellamy

Acting

Nikki Porter

Margaret Lindsay

Acting

Insp. Queen

Charley Grapewin

Acting

Nurse Marian Tracy

Mona Barrie

Acting

Page

Paul Hurst

Acting

Sgt. Velie

James Burke

Acting

John Stack

Leon Ames

Acting

Dr. Edwin L. Jannery

George Zucco

Acting

Mrs. Augusta Stack

Blanche Yurka

Acting

Miss Fox

Charlotte Wynters

Acting

Lou Thomas

Tom Dugan

Acting

Dr. Williams

Olin Howland

Acting

Dr. Dunn

Dennis Moore

Acting

Alice Stack

Jean Fenwick

Acting

Crothers

Pierre Watkin

Acting

Hospital Orderly (uncredited)

Byron Foulger

Acting