No overview available for this season.
When ex-detective-turned-teacher Jackie Ellis discovers one of her pupils dead, her estranged partner DS Bull returns to investigate. Jackie finds the body of her nine-year-old pupil, Cefin, seemingly drowned. The discovery revives the ghost of an unsolved cold case that rocked the town three years prior.
Old accusations resurface as Jackie and Bull must put aside years of mistrust before the town's tensions ignite into violence
With the town turning on itself as long-buried secrets emerge, Jackie and Bull's fragile partnership is tested by a new discovery.
Jackie struggles after her estranged sister returns and reignites years of guilt and betrayal, while Bull finds himself faced with two cases that are undeniably linked.
Rising floodwater cuts Morfa Halen off from the world as another body is discovered, with Bull closing in on the truth behind an illegal operation at the heart of all three cases.
