The first of a two-part documentary featuring unprecedented access behind the scenes of a crime investigation into a serial rapist who Cambridgeshire Police believe preyed on dozens of women. The suspect, Craig France, has a reputation across Peterborough's nightclub scene and for the notorious hot-tub afterparties he has hosted at his house. A search of France's house reveals an obsession with hidden recording devices. As officers download the data from the cameras, what they find shocks them.