The Project by Courtney Summers

1998: Six-year-old Bea doesn?_Tt want a sister but everything changes when Lo is born early. Small and frail, Lo needs someone to look out for her. Having a sister is a promise, Mum says - one Bea?_Ts determined not to break. 2011: A car wreck, their parents dead. Lo would?_Tve died too if not for Lev Warren, the charismatic leader of The Unity Project. He?_Ts going to change the world and after he saves Lo?_Ts life, Bea wants to commit to his extraordinary calling. Lev promises a place for the girls in the project, where no harm will ever come to them again . . . if Bea proves herself to him first. 2017: Lo doesn?_Tt know why Bea abandoned her for The Unity Project after the accident, but she never forgot what Bea said the last time they spoke: We?_Tll see each other again. Six years later, Lo is invited to witness the group?_Ts workings, meet with Lev, and - she hopes - finally reconnect with her sister. But Bea is long gone, and the only one who seems to understand the depths of this betrayal is Lev. If it?_Ts family Lo wants, he can make her a new promise . . . if she proves herself to him first. Powerful, suspenseful and heartbreaking, The Project follows two sisters who fall prey to the same cult leader - and their desperate fight back to one another.
Binding: Paperback / softback