Polly Vaughan is trying to escape the ravaging guilt of a disturbing incident in London by heading north to the Scottish Highlands. As soon as she arrives, this spirited, funny, alert young woman goes looking for drink, drugs and sex – finding them all quickly, and unsatisfactorily, with the barman in the only pub. She also finds a fresh kind of fear, alone in this eerie, myth-drenched landscape. Increasingly prone to visions or visitations – floating white shapes in the waters of the loch or in the woods – she is terrified and fascinated by a man she came across in the forest on her first evening, apparently tearing apart a bird. Who is this strange loner? And what is his sinister secret?