Late night on a notorious high-rise estate in Hackney & a white van is being driven erratically. The driver is pulled over by the police & questioned. A woman on the street after a long evening's drinking... She never makes it home. A suspect...an arrest...a confession...A case done & dusted? Five years earlier a 13-year-old girl disappeared in broad daylight on a busy London street. DCS James Langton headed the investigation; the case was never closed. It has haunted him ever since. & now comes another confession to this murder & to one more besides. Too good to be true? DCI Anna Travis pulled into the fray isn't so sure that they have their man. Then the suspect changes his story...