Patricia Cornwell delivers the newest engrossing thriller in her high-stakes series starring medical examiner Dr. Kay Scarpetta.Depraved Heart: "Void of social duty and fatally bent on mischief." - Mayes v. People, 806 III. 306 (1883)Dr. Kay Scarpetta is working a suspicious death scene in Cambridge, Massachusetts when an emergency alert sounds on her phone. A video link lands in her text messages and seems to be from her computer genius niece Lucy. But how can it be? It's clearly a surveillance film of Lucy taken almost twenty years ago.As Scarpetta watches she begins to learn frightening secrets about her niece, whom she has loved and raised like a daughter. That film clip and then others sent soon after raise dangerous legal implications that increasingly isolate Scarpetta and leave her confused, worried, and not knowing where to turn.