The Last Precinct by Patricia Cornwell

Thwarting an attack by a suspected serial killer puts Virginia’s Chief Medial Examiner Kay Scarpetta in the harsh glare of the spotlight. As her personal and professional lives come under suspicion, she discovers that the so-called Werewolf murders may have extended to New York City and into the darkest corners of her past. A formidable prosecutor, a female assistant district attorney from New York, is brought into the case—and Scarpetta must struggle to make what she knows to be the truth prevail against mounting and unnerving evidence to the contrary. Tested in every way, she turns inward to ask, Where do you go when there is nowhere left?