American tourists David and Jack are savaged by an unidentified vicious animal whilst hiking on the Yorkshire Moors. Retiring to the home of a beautiful nurse to recuperate, David soon experiences disturbing changes to his mind and body.
David Naughton
as David Kessler
Jenny Agutter
as Nurse Alex Price
Griffin Dunne
as Jack Goodman
John Woodvine
as Dr. J. S. Hirsch
Don McKillop
as Inspector Villiers
Brian Glover
as Chess Player
David Schofield
as Dart Player
Lila Kaye
as Barmaid
Rik Mayall
as Second Chess Player
Sean Baker
as 2nd Dart Player
Frank Oz
as Mr. Collins
Paul Kember
as Sergeant McManus
