Grab your loved ones and dance to Dolly today ❤️ #BlueLights #DollyParton #Belfast #NorthernIreland For three police recruits in Belfast, the pressure is immense. Facing criminal gangs and divided communities, they don’t know who to trust. The odds are they won’t all make it. Blue Lights returns to BBC iPlayer this autumn. Series 1–3 are available to watch now.