Overview
- The fourth season premiered on BBC One on Tuesday, September 29 at 9pm and centres on the legal aftermath of Gerry Cliff’s 2023 killing.
- Richard Dormer reprises Gerry Cliff in a series of flashbacks while the show stages the character’s murder trial rather than reversing his death.
- Co‑creators Declan Lawn and Adam Patterson say the season functions as an origin story designed to give viewers closure and let the fictional case reach a dramatic conclusion.
- All main cast members return and the series adds supporting actors including Hannah McClean as solicitor Jen Robinson and Jonathan Harden as disgraced former inspector Jonty.
- The season resumes six months after series three with constables pushed to their limit by a new street threat and a buried secret that could prompt greater scrutiny of policing and criminal networks.