A married beauty bored in the provinces had an affair with a handsome fellow traveler on a train, ran away with him, and then, after some quarrel, killed him?This is the version of the police investigating the case of the disappearance of Lara Finch and death her boyfriend Guy.And only the quiet, modest Iris, Lara's friend, is sure: the police are wrong. Lara is not a criminal, but a victim of a crime. No wonder she was afraid of someone all the time, lived in constant anxiety, as if looking over her shoulder and preparing to escape ...But how to help Lara before it's too late? With courage uncharacteristic of her, Iris begins the search and, step by step, moves along the trail of old sins and dark, dangerous secrets ...