Un nuevo magnífico thriller del autor de Terapia, El pasajero 23 y El proyecto Joshua.Desde que fue violada en una habitación de hotel, la joven psiquiatra Emma Stein ya no abandona su casa. Había sido la tercera víctima de un psicópata asesino y la única que escapó con vida, aunque sin verle la cara. Un día el cartero deja un paquete destinado a su vecino, a quién no conoce. Al aceptarlo no imagina que está a punto de comenzar su peor pesadilla...ENGLISH DESCRIPTIONA magnificent new thriller from the author of Therapy, Passenger 23, and The Joshua Project. Since she was raped in a hotel room, young psychiatrist Emma Stein has not left her house. She was the third victim of a killer psychopath and the only one who escaped alive, although she never saw his face. One day the mail carrier leaves a package addressed to her neighbor, whom she does not know. When she accepts it, she never imagines that her worst nightmare is about to begin…