在康沃尔郡的一个村庄里，许多当地人死于神秘的蛇咬伤，但验尸官将死亡定为心脏病发作，直到一个新来的家庭开始调查。
Noel Willman
Dr. Franklyn
Jennifer Daniel
Valerie Spalding
Ray Barrett
Harry George Spalding
Jacqueline Pearce
Anna Franklyn
Michael Ripper
Tom Bailey
John Laurie
Mad Peter
Marne Maitland
The Malay
David Baron
Charles Edward Spalding
Charles Lloyd Pack
The Vicar
Harold Goldblatt
The Solicitor
George Woodbridge
Old Garnsey
Ernie Rice
Pub Patron (uncredited)
Jim Brady
Dickey Luck
