Casts
Ralph Bellamy
as Ellery Queen
Margaret Lindsay
as Nikki Porter
Charley Grapewin
as Insp. Queen
James Burke
as Sgt. Velle
Michael Whalen
as Dr. James Rogers
Marsha Hunt
as Barbara Braun
Fred Niblo
as John Braun
Charles Lane
as Dr. Prouty
Ann Shoemaker
as Lydia Braun
Marion Martin
as Cornelia
