Director
James P. Hogan
DIRECTOR
Writer
Manfred Lee
WRITER
Frederic Dannay
Eric Taylor
Stars (in credits order)
Ralph Bellamy
Ellery Queen
Margaret Lindsay
Nikki Porter
Charley Grapewin
Insp. Queen
Mona Barrie
Nurse Marian Tracy
Paul Hurst
Page
James Burke
Police Sgt. Velie
Leon Ames
John Stack
George Zucco
Dr. Edwin L. Janney
Blanche Yurka
Mrs. Augusta Stack
Charlotte Wynters
Miss Fox
Tom Dugan
Lou Thomas
Olin Howland
Dr. Williams
Dennis Moore
Dr. Dunn
Jean Fenwick
Alice Stack
Pierre Watkin
Crothers
Barlowe Borland
Martin - Butler (uncredited)
Evelyn Brent
Microscope Nurse (uncredited)
Don Brodie
Hospital Desk Supervisor (uncredited)
Dick Curtis
Policeman (uncredited)
Edgar Dearing
Motorcycle Cop (uncredited)
Claire Du Brey
Nurse in Corridor (uncredited)
Byron Foulger
Male Nurse (uncredited)
Edward Gargan
Dumb Henchman (uncredited)
Harrison Greene
Hospital Elevator Repairman (uncredited)
Eddie Kane
Desk Sergeant (uncredited)
Dave O'Brien
Roadside Ambulance Attendant (uncredited)
Harry Tenbrook
Morgue Attendant (uncredited)
Harry Tyler
Henchman (uncredited)
Pat West
Ambulance Attendant (uncredited)
