Murder: Suspect No 1 S01E03 - Knuckle Duster Killer Part 1

A man is brutally beaten with a suspected knuckle duster in his own home in Hull and later dies in hospital, launching an intense and urgent murder inquiry. A young woman who called the ambulance is arrested - but is she responsible or a crucial witness? In the first of two episodes, can the murder detectives unravel the truth from the lies and nail the killer?