Peter Cushing
Detective Inspector Quennell
Peter Cushing
Detective Inspector Quennell
Robert Flemyng
Dr. Carl Mallinger
Wanda Ventham
Clare Mallinger
Glynn Edwards
Sgt. Allan
Kevin Stoney
Granger the Butler
Vanessa Howard
Meg Quennell
David Griffin
William Warrender
Roy Hudd
Morgue Attendant
William Wilde
Frederick Britewell
Simon Cain
Clem Withers
Russell Napier
Landlord
John Paul
Mr. Warrender
Leslie Anderson
Coachman Joe Trager
David Lyell
Student with Toy Spider
Drew Russell
Constable Smith
Robert Cawdron
Chief Constable
Kenneth Colley
James
Roy Evans
2nd Porter
Peter Bryan
Screenplay
Vernon Sewell
Director
Paul Ferris
Original Music Composer
Henry Montsash
Hairdresser
Freddie Vale
Casting
Wilfred Woods
Art Direction
Ricky Coward
Production Manager
Paul Ferris
Conductor
Marie Feldwick
Wardrobe Designer
Roger Dicken
Special Effects
Rosemarie McDonald Peattie
Makeup Artist
Tony Tenser
Executive Producer
Arnold L. Miller
Producer
Stanley A. Long
Director of Photography
Howard Lanning
Editor
Jim Alloway
Focus Puller
Pat O'Donnell
Production Secretary
Freda Pearson
Set Dresser
George Pollard
Assistant Director
Alan Hogben
Sound Mixer
Norman Jones
Camera Operator
Mike Tucker
Boom Operator
Len Harvey
Construction Manager
Eve Wilson
Continuity