When composer Gideon Lake moves into his new apartment building, he becomes infatuated by his neighbour Kate Solway. After they begin a passionate affair, they travel to Europe to continue their fling in secret. But, when strange and unexplainable events start to happen, what should have been a romantic trip turns into a nightmare. Deeply disturbed, Gideon returns home, but he can’t stop thinking about Kate. As he considers all of the terrifying things that have happened in her presence, he begins to search for answers to questions he has never been brave enough to ask: who – or what – is Kate? And what does she want with him?
