"Natalie Collins hasn't heard from her sister in more than half a year. The last time thy spoke, Kit was slogging from mundane workdays to obligatory happy hours to crying in the shower about their dead mother. She told Natalie she was sure there was something more out there. And then she found Wisewood, a group that promises to maximize the self and achieve true fearlessness. Natalie thinks it's a bad idea, but Kit voluntarily disappears to a private island off the coat of Maine. Then six months later Natalie receives a menacing email from a Wisewood account threatening to reveal the secret she's been keeping from Kit"--adapted from jacket.