The BBC has released the first trailer for season 4 of Blue Lights.
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.
This series also sees the return of Richard Dormer as Gerry Cliff in a special one-off episode, Cathy Tyson, who plays private members club owner Dana Morgan, Hannah McClean as solicitor Jen Robinson, Jonathan Harden as Inspector ‘Jonty’ Johnston and Michael Smiley as C3 intelligence officer Paul ‘Colly’ Collins.
Look out for it this autumn.