To some, Eldon Mate was evil personified. Others saw the former physician as a saint. But one thing was clear: Dr. Death had snuffed out the lives of dozens of human beings and now someone had turned him into a victim. When Mate is found mutilated in a rented van, harnessed to his own killing machine, Delaware is asked to aid his old friend, homicide cop Milo Sturgis, in the hunt for the death doctor?s executioner. But Alex harbors secrets of his own that threaten to derail the partners? friendship as well as the increasingly complex investigation. With page-turning suspense and vivid portraits of L.A.'s darkest side, perennial bestseller Jonathan Kellerman's latest tale of psychopathology taken to the extreme delivers an unforgettable journey into the most sinister corners of the human mind.