The explosive new thriller from New York Times-bestselling author and master of the medical thriller Robin Cook. >When more anesthesia-related deaths start to occur, Noah is forced to question all of the residents on his staff, including Ava, and he quickly realizes there's more to her than what he sees. A social-media junkie, Ava has created multiple alternate personas for herself on the Internet. With his own job and credibility now in jeopardy, Noah must decide which doctor is at fault and who he can believe--before any more lives are lost.