American tourists David and Jack are savagely attacked by an unidentified animal while hiking on the Yorkshire Moors. After retiring to the home of a beautiful nurse to recuperate, David soon begins experiencing disturbing changes to his body and mind.

Cast

David NaughtonDavid Kessler

Griffin DunneJack Goodman

Jenny AgutterNurse Alex Price

John WoodvineDr. J.S. Hirsch

Don McKillopInspector Villiers