Paperback | 384 pages

The instantNew York Timesbestseller! In this twisty psychological thriller from the #1New York Timesbestselling author ofTHE CELLAR, Ivy finds out that her twin sister, Iris, is trying to push her out of her own lifeand might be responsible for their mothers death.

After their parents divorced, 10-year-old twins Ivy and Iris were split upIvy lived with Dad, Iris with Mom. Now, after a tragic accident takes their moms life, the twins are reunited and Iris moves in with Ivy and their dad. Devastated over Moms death, Iris spends the first few weeks in almost total silencethe only person she will speak to is Ivy. Iris feels her life is over and she doesnt know what to do. Ivy promises her twin that she can share her life now. After all, theyre sisters. Twins. Its a promise that Iris takes seriously. And before long, Ivys friends, her life at school, and her boyfriend, Tyler, fall under Iriss spell. Slowly, Ivy realizes shes being pushed out of her own life. But shes just being paranoid, right? And Moms accident wasjust an accident. Right? Its not like sheor Dador Tylerare in any danger.