Police: Suspect No.1: Season 1, Episode 4

1 - 4: Violent Strangers

The team in Norwich gathers evidence about a single-punch attack that has left a man with a serious brain injury, but no witnesses are willing to come forward to identify the culprit. In another incident, a pensioner is allegedly attacked and robbed just outside a betting shop, but, once again no-one present can identify the person responsible.