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