After giving birth to identical twin boys, Lauren struggles to reconnect with her identity while overcoming the newborn learning curve times two. Two nights in a row she hears a woman in the cubicle right next to her. When she finally investigates there is an unkempt, toothless hag there with a basket holding two \babies. The woman tells Lauren that both sets of twins are charmed--the hags getting the evil end of the stick. The hag proposes a swap to even things out. Why wouldn't Lauren want things to be fair, she says. Cue the chills and the need to find out how Lauren goes from this moment to the frightening tableau we witness in the pages of the book. You want to run away screaming, but you can't look away.