To be with her old college girlfriends, June Moody travels to a sprawling estate in the San Juan Islands for a baby shower hosted by her friend and nemesis, Sadie MacTavish. The next morning, Sadie is missing, the house is in shambles, and bloodstains mar the staircase. None of them has any memory of the night before; they wonder if they were drugged. Following a secret rendezvous with Sadie's husband—whom she had dated—June has plenty of reason to suspect herself, and in this thriller, the police have some questions of their own.