Director/a
Val Guest
DIRECTOR/A
Reparto (por orden de créditos)
Brian Donlevy
Quatermass
John Longden
Lomax
Sidney James
Jimmy Hall
Bryan Forbes
Marsh
William Franklyn
Brand
Vera Day
Sheila
Charles Lloyd Pack
Dawson
Tom Chatto
Broadhead
John Van Eyssen
The P.R.O.
Percy Herbert
Gorman
Michael Ripper
Ernie
John Rae
McLeod
Marianne Stone
Secretary
Ronald Wilson
Young Man
Jane Aird
Mrs. McLeod
Betty Impey
Kelly
Lloyd Lamble
Inspector
John Stuart
Commissioner
Gilbert Davis
Banker
Joyce Adams
Woman M.P.
Edwin Richfield
Peterson
Howard Williams
Michaels
Phillip Baird
Lab. Assistant
Robert Raikes
John Fabian
Intern
George Merritt
Super
Arthur Blake
Constable
Michael Balfour
Harry
John Adams
Policeman (uncredited)
Chris Adcock
Worker (uncredited)
Peter Brace
Guard (uncredited)
Jim O'Brady
Daniel Brown
Tony Castleton
Leslie Crawford
Vernon Greeves
First Man (uncredited)
George Hilsdon
Jan Holden
Young Girl (uncredited)
Arthur Howell
Alastair Hunter
Labour MP (uncredited)
Barry Lowe
Chris (uncredited)
Fred Machon
VIP at Research Plant (uncredited)
Frank Maher
Police Sergeant Escorting Suspect (uncredited)
Colin McKenzie
Jim Morris
Police Sergeant (uncredited)
Norman Morris
Intern (uncredited)
Cecil Paul
Henry Rayner
Drunk (uncredited)
Joan Schofield
Woman Shopper (uncredited)
Charles Stevenson
Alfred Wright
Paula Wright