In 2014 a sex offender called Robert Hind goes missing from a bail hostel. Cops fear he's absconded to commit crime. The town is scoured. Then cops find CCTV of the man with another ex-con called David Mitchell at the bus station. They find out the two men are friends, who live together at the hostel. Rumour has it they are in a relationship together. They fear the two men have gone to do something terrible. But then they learn that the sex offender hadn't absconded, he's been murdered, by Mitchell, the man with him on CCTV. Mitchell has killed before – murdering his wife in the 90's. Now he's killed paedophile Hind, and dumped him in the canal. It's a canal that contains many dark secrets, as we also see from the story of Tobias Minski, a student in Huddersfield who disappeared and sparked a town-wide search, before his body was found folded up in a suitcase beside the canal.