Casts
Ralph Bellamy
as Ellery Queen
Margaret Lindsay
as Nikki Porter
Charley Grapewin
as Insp. Queen
Mona Barrie
as Nurse Marian Tracy
James Burke
as Sgt. Velie
Leon Ames
as John Stack
George Zucco
as Dr. Edwin L. Jannery
Blanche Yurka
as Mrs. Augusta Stack
Charlotte Wynters
as Miss Fox
Tom Dugan
as Lou Thomas
