The film opens with a narrated disclaimer over footage of an opening coffin. The narrator explains that the film's climax is so terrifying that it may kill the viewer, and reassures the audience that if they die of fright while watching the film, they will receive a free burial service, and it closes on the casket which has a card inside reading "Reserved for You."[1] Newlyweds...。The new science teacher Dr. Julian Olcott (Carl Schell) with a mysterious past arrives in an institutional boarding school for troublemaker girls. Along the night, the intern Mary Smith (Mary McNeeran), who is blackmailing another teacher - Sir Alfred Whiteman (Maurice Marsac) - with some love letters, is slaughtered by a werewolf. The detective in charge of the investigation attributes the crime to a wolf, while her mate Priscilla (Barbara Lass) believes she was killed by Sir Alfred. On the next days, other deaths happen in the school, reducing the list of suspects.。