Overview
- Promotion for season four has begun with Siân Brooke saying her character Grace reaches a breaking point after passing detective exams but seeing her promotion blocked, which drives growing disillusionment with policing.
- The season foregrounds sectarian and community clashes in Belfast, including organised anti‑immigration protests and Loyalist‑Republican confrontations that the officers must manage.
- A newcomer named Katie uses livestreaming and social posts to amplify protests and to challenge Grace’s safety and authority on the job without revealing key plot outcomes.
- Actor Richard Dormer’s Gerry Cliff is set to reappear in the new series and producers say his return will prompt the uncovering of hidden truths tied to earlier storylines.
- The BBC will release the series on its platforms in late September or early October, with coverage reporting different exact dates so viewers should check BBC One and BBC iPlayer for the confirmed schedule.