Harry and Valerie Spalding arrive in the remote Cornish village to an unwelcoming and suspicious population. Harry's brother dies suddenly, bitten by a lethal reptilian bite. They befriend a young woman Anna whose tyrannical father controls her life and, as they discover that others in the village have suffered a similar fate, their investigations lead to Anna. What they uncover is a victim of the most terrifying legacy... a destiny of mutilation and murder.
Noel Willman
as Dr. Franklyn
Jennifer Daniel
as Valerie Spalding
Ray Barrett
as Harry George Spalding
Jacqueline Pearce
as Anna Franklyn
Michael Ripper
as Tom Bailey
John Laurie
as Mad Peter
Marne Maitland
as The Malay
David Baron
as Charles Edward Spalding
Charles Lloyd Pack
as The Vicar
Harold Goldblatt
as The Solicitor
George Woodbridge
as Old Garnsey
Ernie Rice
as Pub Patron (uncredited)