Director/a
Terence Fisher
DIRECTOR/A
Escritor/a
Richard H. Landau
ESCRITOR/A
Charles Eric Maine
Paul Tabori
Reparto (por orden de créditos)
Howard Duff
Dr. Stephen Mitchell
Eva Bartok
Dr. Lisa Frank
Alan Wheatley
Dr. Smith
Philip Leaver
Professor Koepler
Michael Medwin
Dr. Toby Andrews
Andrew Osborn
Dr. Philip Crenshaw
Cecile Chevreau
Vanessa Mitchell
Anthony Ireland
General Hayes
Hugh Moxey
Col. Alfred Daniels
David Horne
Minister
Eddie Boyce
Gate Security Officer (uncredited)
Charles Hammond
Technician (uncredited)
Jack Hetherington
Technician Assisting Dr. Mitchell (uncredited)
Richard Neller
Police Inspector (uncredited)
Leo Phillips
Sergeant Peterson (uncredited)
Marianne Stone
Mrs. Rogers (uncredited)
Jean Webster-Brough
Mrs. Daniels (uncredited)
