Blue Lights | Series 4 Preview (BBC One)
Three years into their jobs as response officers, Constables Grace Ellis, Tommy Foster, and Annie Conlon are operating at their limit, facing a new threat on the streets that the police can barely control.

Meanwhile, the murder trial of Gerry Cliff exposes a dangerous and long-buried secret that leads to chaos both inside the police and across the criminal underworld. As they grapple with big decisions about their future, Grace, Tommy and Annie must find the courage to face the greatest threat they have ever encountered: the truth.
The multi-award winning show stars Siân Brooke (Sherlock, Trying) as Grace Ellis, Martin McCann (Trespasses, Hostage) as Stevie Neil, Katherine Devlin (The Day Of The Jackal, Vikings) as Annie Conlon, Nathan Braniff (Blue Lights S1-4) as Tommy Foster, Joanne Crawford (Outlander: Blood of my Blood) as Chief Inspector Helen McNally, Andi Osho (The Sandman, I May Destroy You) as Sandra Cliff.
Plus Frank Blake (Say Nothing, Normal People) as Shane Bradley, Abigail McGibbon, (Ballywalter, The Power of Partner), as Tina McIntyre, Dearbháile McKinney (Blue Lights S1-4) as Aisling Byrne, Neil Keery (How To Get To Heaven From Belfast) as Sergeant Lawrence McCloskey and Andrea Irvine (Call The Midwife) as Chief Superintendent Nicola Robinson.
The series also sees the return of Richard Dormer (The Day of the Jackal, Game of Thrones) as Gerry Cliff in a special one off episode, Cathy Tyson (Dune: Prophecy, Black Ops) who plays private members club owner, Dana Morgan, Hannah McClean (Malpractice) as solicitor, Jen Robinson, Jonathan Harden (Time, Mix Tape) as Inspector ‘Jonty’ Johnston and Michael Smiley (Bad Sisters, Censor) as C3 intelligence officer Paul ‘Colly’ Collins.
Blue Lights returns Tuesday 29th September at 9pm on BBC One.



































