Laura Verity, tired of life, decides to rent a very isolated cottage in the countryside. On arriving there in the darkness in the middle of the storm, she is shocked to find evidence that there is somebody else in the house. Shortly afterwards she discovers a body of a young woman, strangled to death, on the bed. Terrified, in the morning she hurries into the nearest market town to report the crime, only to find the police dubious about her claims - particularly when they return to the cottage with her and find no body. Only Arthur Crook, a dishevelled lawyer she encounter, is ready to believe her. He suggests that she is now in grave danger from the murderer and persuades her to move to a large, busy hotel in Brighton where she will be safer. The determined Verity perseveres in trying to solve the mystery, assisted at first in an offhand way by Crook. Newspaper publicity at last draws the police into the case, and with Crook's advice they find a body hidden in the well of the cottage. It soon proves to be not the corpse of the missing young woman, but the cottage's previous owner. To add to the confusion Miss Verity has herself now vanished, with Crook concerned that she has fallen into the hands of the murderer.