A poignant and powerful story of a grieving girl willing to risk everything, perfect for fans of Robin Benway and Jandy Nelson.

On prom night, Hannah MacLaren sits in the headmaster's office in her fanciest dress, soaked to the bone. She pulled the fire alarm right as the queen was about to be crowned, and she's in huge trouble. But Hannah had her reasons for ruining the biggest night of everyone's lives.

One year ago, her cousin Sophie, who was also her best friend and the person she loved most in the world, died of an overdose. Drowning in grief, Hannah became obsessed with one question: Who gave Sophie those pills? Then she concocted a plan: enroll at her cousin's fancy private school with a new look and a mouthful of lies, and find out the truth once and for all.

But she didn't expect all the lines to blur. She didn't expect Sophie's friends to be so complicated. She didn't expect to fall for her longtime enemy. Now, she has a choice: let herself really mourn Sophie and move on, or see her search through to its explosive end—even if it means destroying herself.