Everyone is talking about it: a serial killer is on the loose. Women are being slain across the countryside surrounding the isolated Warren mansion where Helen has taken up a domestic position. And each murder is closer to the house than the last…

When the body of a local girl is discovered in the nearby village, Professor Warren orders the mansion be locked up overnight for the residents’ safety. But as a storm rages outside and tensions mount within the home. Helen begins to wonder whether the murderer isn’t already inside, stalking his next victim…