No one is supposed to know harmless office worker Gwen Tanner is the vanished daughter of serial killer Abel Haggerty. But a low profile and a new name aren't going to cut it when an obsessive new killer starts targeting her, in this lively and propulsive thriller with a standout voice. Marin Haggerty, the daughter of a notorious serial killer, was only a child when they arrested her father. Ripped from her home and given a new identity, Marin disappeared. Twenty years later, Gwen Tanner keeps everyone at a distance, preferring to satirize the world around her than participate in it. It's for her safety--and theirs. But when someone starts sending body parts to her front door, the message is clear: I Know Who You Are. To preserve her secrets, Gwen must hunt down the killer, a journey which immerses her in the twisted world of true crime fandom and makes her confront her past once and for all. Maybe she is capable of deep, human connections, but she's not the only one keeping secrets. Will opening herself up to others help her find the killer, or remind her why it was necessary she hide her true self in the first place? The apple never falls too far, after all.