The BBC has announced details of Blue Lights, a new Belfast-set police drama about three rookie PSNI officers.
The series has begun filming in the city.
Blue Lights stars Siân Brooke (Sherlock, Good Omens), Martin McCann (Marcella, Sentinel), Richard Dormer (Game of Thrones, Fortitude), Katherine Devlin (The Dig, Vikings) and newcomer Nathan Braniff alongside John Lynch (Tin Star, The Fall), Jonathan Harden (Time, Unforgotten) and Valene Kane (The Fall, Gangs of London).
The BBC says: "Grace (Siân Brooke), a mother of a teenage boy, has made the decision in her 40s to leave her steady job as a social worker to join the Police Service of Northern Ireland. Having previously worked in social care she straddles a fine line between the personal and professional. It's the biggest gamble of her life, and just a few weeks into the job, she's making so many mistakes that her decision no longer looks like a winning bet.
"Her fellow rookies are Annie (Katherine Devlin), who struggles with the fact that her chosen path may mean having to leave everything she's ever known behind, and Tommy (Nathan Braniff), who is desperate to prove himself, despite being disastrously inept at the practical side of frontline response policing.
"All three are new police officers in their probation period with the PSNI, the odds are at least one of them isn't going to last. The pressure is immense, but if they succumb to it, they won't survive."
Blue Lights has been created by the writing team of Declan Lawn and Adam Patterson (The Salisbury Poisonings).
"Every writer wants to explore their own place, and their own society as authentically and as honestly as they can," they said. "We feel enormously grateful to BBC drama for letting us do that with Blue Lights. And to do it with a cast boasting so much new and established talent makes it even more exciting."