A paranoid single mom is forced to confront the unthinkable act she committed as a desperate teenager in this addictive thriller with a social media twist.

"Utterly riveting." —Heather Gudenkauf, New York Times bestselling author of The Overnight Guest

Maria Weston wants to be friends. But Maria Weston is dead. Isn't she?

1989. When Louise first notices the new girl who has mysteriously transferred late into their senior year, Maria seems to be everything the girls Louise hangs out with aren't. Authentic. Funny. Brash. Within just a few days, Maria and Louise are on their way to becoming fast friends.

2016. Louise receives a heart-stopping email: Maria Weston wants to be friends on Facebook. Long-buried memories quickly rise to the surface: those first days of their budding friendship; cruel decisions made and dark secrets kept; the night that would change all their lives forever.

Louise has always known that if the truth ever came out, she could stand to lose everything. Her job. Her son. Her freedom. Maria's sudden reappearance threatens it all, and forces Louise to reconnect with everyone she'd severed ties with to escape the past. But as she tries to piece together exactly what happened that night, Louise discovers there's more to the story than she ever knew. To keep her secret, Louise must first uncover the whole truth, before what's known to Maria—or whoever's pretending to be her—is known to all.