A tense, gripping psychological thriller, with Hitchcockian overtones, perfect for fans of Gillian Flynn's GONE GIRL and Sophie Hannah. Iris's world is rocked when her friend Lara disappears while travelling on the sleeper train between Cornwall and London. The police investigation reveals that married Lara, a regular commuter on the night train, was secretly having an affair with another married commuter. Although they have yet to find Lara's body, the police suspect she was killed by her lover and dumped from the train as it sped through the countryside. Iris is unconvinced and starts to delve into what really happened to her friend. She soon discovers that Lara has been running away from a secret past and from someone who wants to do her harm. Iris's search takes her to the Far East where Lara travelled as a young woman. Here, Iris unveils the shocking truth and also finds herself in terrible danger...