Innocent Blood - P. D. James

Adopted as a child into a privileged family, Philippa Palfrey fantasizes that she is the daughter of an aristocrat and a parlor maid. The terrifying truth about her parents and a long-ago murder is only the first in a series of shocking betrayals. Philippa quickly learns that those who delve into the secrets of the past must be on guard when long-buried horrors begin to stir. As a crime novel, wrote the London Times, Innocent Blood is the peak of the art. Flawlessly crafted...profoundly, masterfully moving, Cosmopolitan concurred.