Summary: New York Times best-selling author Jenny Han won a loyal fan following with her Summer series, including We'll Always Have Summer . Here she teams up with Siobhan Vivian for an enthralling tale of revenge. Mary has been suffering for years from a traumatic childhood event—and now seeks vengeance on the boy responsible. Kat is fed up with her former best friend—the ultimate mean girl—and wants the bully to get a taste of her own medicine. Meanwhile, Lillia is determined to protect her younger sister from a guy's less-than-honorable intentions. Together, the girls plan their revenge—but the price of justice may be higher than they thought