[A] deeply disconcerting investigative thriller that seems unassuming but worms under the skin and into the mind. - Booklist (Starred Review)

A powerful, suspenseful, and heartbreaking thriller about identity, sisterhood, and belonging. - Kirkus (Starred Review)

A gripping, flawless psychological thriller ready to leave readers shattered. - School Library Journal (Starred Review)

In this compelling and absorbing YA novel, two sisters make the most painful of choices based on their love for one another. - Shelf Awareness

From Courtney Summers, the New York Times bestselling author of the 2019 Edgar Award Winner and breakout hit, Sadie, comes a sensational follow-up--another pulls-no-punches thriller about an aspiring young journalist determined to save her sister from a cult.

The Unity Project saved my life.

Lo Denham is used to being on her own. After her parents died, Lo's sister, Bea, joined The Unity Project, leaving Lo in the care of their great aunt. Thanks to its extensive charitable work and community outreach, The Unity Project has won the hearts and minds of most in the Upstate New York region, but Lo knows there's more to the group than meets the eye. She's spent the last six years of her life trying--and failing--to prove it.

The Unity Project murdered my son.

When a man shows up at the magazine Lo works for claiming The Unity Project killed his son, Lo sees the perfect opportunity to expose the group and reunite with Bea once and for all. When her investigation puts her in the direct path of its charismatic and mysterious leader, Lev Warren, he proposes a deal: if she can prove the worst of her suspicions about The Unity Project, she may expose them. If she can't, she must finally leave them alone.

But as Lo delves deeper into The Project, the lives of its members, and spends more time with Lev, it upends everything she thought she knew about her sister, herself, cults, and the world around her--to the point she can no longer tell what's real or true. Lo never thought she could afford to believe in Lev Warren . . . but now she doesn't know if she can afford not to.

Welcome to The Unity Project.

This book is brave and raw and exciting and wise--wise about girls and women, weakness and strength, and the bittersweet beauty of being human.--Melissa Albert, New York Times bestselling author of The Hazel Wood Series