A police drama that has gripped viewers is returning for a new series on the BBC22:29, 22 Jul 2026The BBC has shared a first look at the new series of a police drama fans have called "the best cop show".‌Belfast-set Blue Lights has become a huge success since it started in 2023, with viewers gripped by its first three series.‌It is now set to return for a fourth run, and the broadcaster has given fans a peek at what's to come in images showing Siân Brooke, Martin McCann, Katherine Devlin and Nathan Braniff back in uniform.‌The series, which follows officers at the fictional Blackthorn police station in Belfast, will also see the return of Game of Thrones' Richard Dormer.He played Gerry Cliff in series one, and will be back alongside Hannah McClean as solicitor Jen Robinson and Jonathan Harden as disgraced former Inspector, Jonty, in an episode "that will answer important questions from the past".‌The new images come weeks after the BBC shared an exclusive clip from the new season.The brief look at series four showed Constable Shane Bradley (Frank Blake) pulling over elderly driver David (Trevor Gill) and his passenger, Imelda (Rosamund Monteith), to quiz him about whether he had been drinking.Fans are eagerly awaiting the new episodes, after declaring the first three series of Blue Lights were "excellent" and "outstanding".‌One posted a comment on IMDb.com saying the show was "entertainment at its best", while another remarked: "As an ex-cop, I'm so sick of US made cookie cutter police shows. Blue Lights in my opinion is bang on what it's like to be cop.""Brilliant acting, directing, production - award winning drama all round," said someone else. "Absolutely outstanding British drama. It's poignant, emotional, engaging. The cast are brilliant. Best show I've watched in a long time."‌"If you haven't watched Blue Lights yet, you're missing out on one of the best shows in years," one fan wrote on Reddit. "This is a must watch show, one of the best of the 2020s and will one day be a classic," they continued."Watched this whole thing in like a week, it is fantastic," said someone else, as another wrote on Reddit that it was "a masterpiece of a show"."This is probably the best cop show since Southland and Bosch," another viewer commented.Article continues belowBlue Lights will be available on BBC iPlayer and BBC One this autumn.