The first of two editions taking viewers behind the scenes of the police investigation into the premeditated and brutal murder of a young man after officers were called to woods in Hinchingbrooke Country Park in Cambridgeshire when a dog walker found a blood-soaked body. It quickly becomes clear that with no witnesses and no CCTV, there are few clues for DCI Adam Gallop to work with, and cameras follow every twist and turn of an enquiry that involves unravelling what lies behind the murder