In the suburban town of Hampton, the peaceful night air is shattered with the sound of gunfire. Outside a local pub, five are feared dead and the murderer has fled the scene.DCI Helen Lavery works along-side the counter terrorism unit to investigate. Who is behind the mass-shooting? Why target this town?

Meanwhile, Helen is preparing for the trial of Chilli Franks, an organised crime boss who has a grudge against her family. But when Chilli’s nephew befriends her son, and suggestions are made about Chilli’s involvement in the shooting, past fears clash with the present.

Under the spotlight of the world’s media, Helen finds herself in a race against time to solve the case, protect her family and track down the killer before they strike again.