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
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
