When Philip Ashley's beloved guardian and cousin Ambrose married suddenly whilst abroad, Philip was understandably jealous. But when Ambrose died in Italy, Philip was heartbroken. He was also wracked with suspicion of Rachel, Ambrose'sidow, as Ambrose's most recent letters had hinted he no longer trusted his wife. And so Philip prepares to meet his cousin'sidow with hatred in his heart. But when Rachel comes to Cornwall, Philip sees what Ambrose saw, and falls disastrously in love. It is a love tormented by doubts as the contradictions in Rachel's behaviour grows. Is she the tragic angel of his dreams or the mercenary poisoner of his nightmares? And how can Philip ever be certain which?