"Eileen" is a novel written by Ottessa Moshfegh, published in 2015. The story is set in the 1960s and follows the life of Eileen Dunlop, a young woman living in a small town in New England. Eileen works at a juvenile correctional facility and struggles with her troubled family life and feelings of isolation. The narrative explores themes of identity, obsession, and the complexities of human relationships. Eileen becomes infatuated with a new co-worker, Rebecca, which leads her to make choices that change her life forever. The book has received critical acclaim for its dark humor and psychological depth.