1. Hull

This episode explores two terrible crimes that left a lasting impression on Hull - and reveals how complex investigations into one case finally led to both mysteries being solved. The story begins with the apparent kidnap and murder of Christopher Laverack, a crime that initially had police stumped. It would remain unsolved for years. We also tell the story of the disappearance of Joanne Nelson, who vanished from the city on Valentine’s Day, 2005. It was a story that had the whole city on edge and led to the biggest search in Humberside Police history, before a breakthrough led police to finding her killer, and the whereabouts of her body.