Untold

The gripping story of one of the most brutal crime sprees in British history. On a freezing night in December 1985, 19-year-old Alison Day goes missing after getting off a train in desolate part of London--and her disappearance turns into a murder hunt.

Police finally have a clue that could lead them to one of the sadistic killers. The disappearance of newly-wed Anne Lock from a railway station prompts another enormous manhunt.

In 1997, 9 years after John Duffy has been sentenced to life for murder and rape, it seems he wasn't alone in these horrific crimes, and after almost a decade of silence, he starts to talk.