The prosecutor Julia Valentine. Young and ambitious and facing a case that could catapult her career. The defendant David Marquette. A successful Miami attorney and devoted family man. The victims his own wife and three small children. The plea Not Guilty by Reason of Insanity. The perfect father and husband, David Marquette seemingly just snapped one night without reason. His experienced defence team claims it was the paranoid delusions and auditory hallucinations caused by schizophrenia that drove him to execute his entire family. But the state suspects Marquette's insanity defence is being manufactured to disguise murders that were cold-blooded and calculated. Even worse, it believes Marquette may be a suspect in a string of unsolved homicides across the state, which would make him one of the most prolific and elusive serial killers in Florida history. The trial will take Julia on a painful personal journey back into her own past - a past she has struggled for fifteen years to forget. And it will bring her face to face with a future that is so frightening, she's not sure she ever wants to see it.