A chilling classic thriller from the 1930s, by the author of The Lady Vanishes

'Adept at laying one icy finger on the back of your neck' Spectator

'An astonishing and diabolical shock... Required reading' New York Herald Tribune

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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...