The new science teacher Dr. Julian Olcott with a mysterious past arrives in an institutional boarding school for troublemaker girls. Along the night, the intern Mary Smith, who is blackmailing another teacher - Sir Alfred Whiteman - 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 believes she was killed by Sir Alfred. On the next days, other deaths happen in the school, reducing the list of suspects.
as Dr. Julian Olcott
as Priscilla
as Director Swift
as Sir Alfred Whiteman
as Walter Geoffrey
as School Porter
as (as Maureen O'Connor) Leonor MacDonald
as Sheena Whitman
as Mary Smith
as Sandy
as Police Inspector
as Tommy the Porter
