A year-round resident of coastal Littleport, Maine, Avery Greer has little in common with Sadie Loman, one of the wealthy summer vacationers. Yet the girls become best friends, and Avery is welcomed into the Loman family with open arms—until Sadie's tragic death. Though it's ruled a suicide, Avery suspects foul play…even as many in the community blame Avery for the tragedy. Desperate to discover the truth and to clear her own name, Avery launches her own investigation in this compulsively page-turning thriller helmed by a fiercely determined protagonist.