This chilling and intense novel tells the story of a solitary young woman drawn into an online world run by a charismatic web guru who entices her into impersonating a glamorous but desperate woman. Now a series on Netflix.A sheltered young woman raised by a single mother, Leila often struggled to connect with the girls at school. On an internet community for philosophical and ethical debate, she finally comes into her own, and is flattered when the website’s brilliant, charismatic founder invites her to be part of Project Tess. Communicating only through online channels, Leila immerses herself in Tess’s world. She must learn every detail about this other woman’s life: her mother’s birthday, her favorite songs, her best friends, her first kiss. Because soon, Leila will have to become her. And Tess will disappear. FINALIST The Guardian First Book PrizeBritish National Book Award--New Writers Award