Examines the crimes of the couple, revealing the true horror of what took place behind closed doors at 25 Cromwell Street and other addresses in Gloucester over the course of many years.

Featuring witness testimony from those closest to the victims and rarely seen archive footage. The programme also looks at recent police efforts to find the body of Mary Bastholm and tells her story, as well those of the 12 other young women known to have been murdered by Fred and Rose West.