Sandy Craddock, witnessing his detested half-brother mown down in a hit and run, is sure that he himself was the intended victim. When his boss identifies the heavily bandaged and comatose Warren Laing as Sandy, it cues an exchange of identities. In a daze, and convinced the killers will strike again once they realise they've hit the wrong mark, Sandy takes refuge in Warren's luxurious apartment - he clearly won't be needing it. However, it isn't long before a mysterious woman turns up at Warren's home and takes charge of Sandy's complex situation, enrolling them both on an arts course in an isolated castle.When one of the mature students is murdered, Sandy realises he's in too deep. But how can he distance himself from the enchanting Fiona, who has her own secrets to hide, or explain to the police why he's impersonating his critically ill brother? Finding himself caught in a web of his own making, Sandy realises he could be opening himself up to more danger than he could ever have imagined. It is for Detective Superintendent Mike Yeadings' Thames Valley team to unravel the web of deceit from the present while also under pressure to solve a cold case resurrected from the past.