From the #1 New York Times bestselling author of the blockbuster series Blood and Ash, Flesh and Fire, and Lux, this twisty, stand-alone young adult thriller follows a girl as she fights to piece together her memories of one life-changing night.

Goodreads Choice Award Nominee for Readers' Favorite Young Adult Fiction

Before Samantha and her best friend disappeared without a trace one night, everyone said Sam had it all—popularity, wealth, a dream boyfriend. But now that Sam has resurfaced, she has no recollection of who she was or what happened to her that night—she is a stranger in her own life.

As she tries to piece together her life from before, she realizes it’s one she no longer wants any part of. The old Sam took “mean girl” to a whole new level, and it's clear she and her best friend Cassie were more like best enemies.

Sam is pretty sure that losing her memories is like winning the lottery. She’s getting a second chance at being a better daughter, sister, and friend, and she's falling hard for Carson Ortiz, a boy who has always looked out for her—even if the old Sam treated him like trash.

But Cassie is still missing, and the facts about what happened to her that night aren't just buried deep inside of Sam's memory—someone else knows, someone who wants to make sure Sam stays quiet.

All Sam wants is the truth, and if she can unlock her clouded memories of that fateful night, she can finally move on. But what if not remembering is the only thing keeping Sam alive?

“From the very first page, this book had me enthralled.” —Reader review

“This book will be a huge treat for Jennifer L. Armentrout fans.” —Reader review

“This book was like a psychological thriller meets Mean Girls in the most epic way.” —Reader Review