Blue Lights | Preview (BBC One)

Created and written by Declan Lawn and Adam Patterson, Blue Lights follows three rookie police officers working in Belfast, a uniquely dangerous place to be a police officer.

Siân Brooke (Sherlock, Good Omens), Martin McCann (Marcella, Sentinel), Richard Dormer (Game of Thrones, Fortitude), Katherine Devlin (The Dig, Vikings) and newcomer Nathan Braniff will lead the cast alongside John Lynch (Tin Star, The Fall), Jonathan Harden (Time, Unforgotten) and Valene Kane (The Fall, Gangs of London).

Grace (Siân Brooke), a mother of a teenage boy, has made the decision in her 40’s 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. Often the rookie officers don’t know the extent of the peril they are in, or who they can trust.

Siân Brooke says: “I am so thrilled to be playing Grace in Blue Lights. There is something incredibly special that Declan and Adam have crafted in these scripts and I was hooked from the very first page. Belfast is the beating heart of this piece and it’s a city I’ve been wanting to work in for a long time.”

Blue Lights begins Monday 27th March at 9pm on BBC One.