Jansen has long resented her conceited parents, their money-and-social-standing-mean-everything attitudes, and the pretentious tennis-club and Hamptons-parties lifestyle they push on her. But after learning her mom, Scarlett, tried to murder Clint's mom, Cindy, Jansen's resentment turns to a hatred she has no idea how she'll conceal.
As she, Clint, Jason, and Hersh reel in the wake of their discovery, everything feels surreal to Jansen. The inane love lives of her school friends, nights out at Red Sulfur, the dangerous need for a high that continuously requires more and more stimulation to attain, and even the sordid past of the Circles of Eight. It is only with the boys she feels like her true self, especially in the world she and Jason have created when it's just the two of them, a mystical yet very real Paradise, their "best ever."
But when a long-awaited revelation hits Jansen out of the blue, she snaps out of her foggy reverie and, along with Jason, throws herself deeper into uncovering the mysteries of the Circles of Eight. The trail leads away from her mom's murder attempt fifteen years ago and takes Jansen and Jason back ten years earlier, to the childhood of Jason's mom, Corinne.
Despite warnings they are opening a treacherous Pandora's box, Jansen and Jason set out to connect the clues littered across Corinne's and the Circles' intertwining pasts. An old diary hidden in a bookshelf, a boy named Robert, a letter that can't be found, an unknown object of dire importance, a forgotten summer house in Vermont. And, ultimately, questions Corinne seems determined to leave unanswered.