Over many years, a brilliant scientist in a turn of the century English village successfully keeps his wife's mental illness under control by injecting her with snake venom. When the wife dies giving birth to a daughter, a local witch claims that the child is pure evil and must be destroyed. The scientist is killed by an angry mob, but the baby girl is miraculously saved with the help of an understanding doctor. 19 years later several corpses are discovered on the moors, containing lethal amounts of snake poison. Fearful villagers believe the curse of the snake woman has struck, but a young Scotland Yard inspector is sceptical of the supernatural as he begins his investigation.
Susan Travers as Atheris
John McCarthy as Charles Prentice
Geoffrey Denton as Colonel Clyde Wynborn
Elsie Wagstaff as Aggie Harker
Arnold Marlé as Dr. Murton
Michael Logan as Barkis
Stevenson Lang as Shepherd
John Cazabon as Dr. Horace Adderson
Dorothy Frere as Martha Adderson
Hugh Moxey as Inspector
Frances Bennett as Polly, the barmaid
Jack Cunningham as Constable Alfie
Orville Hampton's script was purchased by Sidney Furie's Caralan Productions. Furie rewrote it to be set in England.
Video Confidential wrote, "obviously hoping to ride the wave of success that Hammer studios were enjoying, this black-and-white programmer blatantly misses all the cues that would insure even the slightest spark of box office fire. The script is clumsy, overly-talkative and there is practically no action to allieviate the plodding pace."
Drewe Shimon described the film in Britmovie as "neither underrated nor a classic. What it is is a competent enough B-movie programmer, entertaining in its own way and enjoyable enough to fit into the ‘cosy horror’ subgenre."