Their toughest shift yet. Get ready for #BlueLights Series 4, coming to BBC iPlayer this autumn. Series 1–3 are available to watch now. 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 under

There's more Ludwig Series 2 to come!