Karen Pirie is returning for a third season — and this time, the cold cases aren’t just cold. BritBox has officially confirmed the renewal, following two acclaimed seasons on ITV and BritBox, with the new chapter based on Val McDermid’s novel The Skeleton Road. The shift in format is significant: instead of three 90-minute episodes, Season 3 will unfold across six one-hour installments, adding an extra hour and a half of investigative tension. That’s not just more screen time, it’s a structural recalibration, suggesting a deeper, more layered approach to the kind of forensic storytelling that made the series a standout. Lauren Lyle, who plays the titular detective inspector, called the role ‘one of the most delicious thrills of my career’ and expressed gratitude for global audiences wanting more of Karen Pirie. And her signature bumbag. The case at hand begins with the discovery of a man’s remains hidden in the roof of a derelict Edinburgh building. The victim fled the Balkans conflict of the 1990s seeking safety in Scotland, only to marry a now-famous author. But fame comes with a price. As Karen digs into the past, she uncovers dangerous secrets, a cycle of revenge, and a killer who believes they’re delivering justice. The investigation forces her to confront how present resentment collides with buried trauma, and the truth turns out to be far more shocking than anyone expected. Marcus Wilson, who produced the first two seasons, returns behind the scenes. The writing team includes acclaimed Scottish screenwriter (and The Bombing of Pan Am 103 creator) taking charge of the season, while Deli Segal (Pickle) pens one episode. No release date has been announced, but given the production timeline, late 2027 seems likely. For fans of slow-burn psychological crime drama, this is the next worth your time. And for those who’ve followed Karen through promotions, personal stakes, and moral ambiguity. The real question isn’t whether she’ll solve the case. It’s whether she’ll survive what it reveals.