Part one of two. Trevor McDonald presents as investigators explore new leads in the infamous case of Fred and Rose West, suggesting there may be more victims than the 12 already known. Following new information from documents and witness testimonies, the team investigates numerous locations where the Wests claimed to have concealed victims. They make a breakthrough when they look into a place known as `the Farm", where Fred claimed to have buried 20 further bodies. The use of Ground Penetrating Radar, sniffer dogs, and an inspection camera also reveal a suspicious cavity beneath a cafe in Gloucester.