Investigators examine the home of a man covered in blood who hands himself into the police declaring he has murdered his wife, but who also claims to have no memory of the incident. Crime scene coordinator Jo Ward carries out analysis of the property in the hope of piecing together a sequence of events, but a crack in the man's mobile provides an insight into his motives.

Crime investigators use forensics to try and find a suspect after a teenage girl is raped by a total stranger in a park in central Newcastle. Alongside the traditional forensic search for body fluids, DNA and fibres, the police also deploy the rapidly evolving skills of their digital forensic team.