When Isabelle Beaufort, a psychology student in Oxford, meets the American heiress Alexandra O'Connor, she is instantly intrigued by the girl's striking resemblance to her flatmate Emily Thompson. Isabelle introduces the two young women and the three of them soon become good friends. Alexandra manages to persuade her look-alike to take her place during mid-term, so she can spend the week with her boyfriend. But what was supposed to be an innocent subterfuge turns into a tragedy when one of the trio gets brutally murdered. Can her two friends find the culprit in time or will one of them become the vicious killer's next victim? From rainy Oxford to the sunny Canary Islands and back, this fast-paced thriller will keep the reader in suspense till the last page.