Beloved forensic detective Lincoln Rhyme is back in this fiendishly clever short story from New York Times bestselling Jeffery Deaver! A tirade of cruelty Forensic scientist Lincoln Rhyme and NYPD Detective Amelia Sachs are dumbfounded when they encounter an unsub like they have never seen before. He uses dating apps to enter the lives and hearts of his victims, to gain their trust, only to shatter their hearts when he reveals his true self. That it was all a lie. That it was just a game to him. A killer in the making Rhyme recognizes the trademark cruelty of a future killer, but the man has been meticulously careful, technically he hasn't committed a crime at all. Will Rhyme and Sachs be able to stop him before he decides that just breaking hearts isn't enough? Can you catch a sadist before his first kill?