“A man is standing in front of me with a gun. He has a message for me and for us all. He says that he will come for us. He will come for all of us, one by one. Until it is finished.”

Police Constable Matthew Riley is called to an emergency on a blazing hot day in Langthorne. He is forced to read out these words live on police radio. Then he is shot dead.

One of the tensest, most authentic police thrillers you will read this year. Full of twists and turns, you won’t want to put this down until the shocking conclusion.

Someone is killing the officers of the Langthorne Police one by one. And in a sadistic twist he makes each victim push their radio panic button before they die, thus broadcasting their last moments to the entire force.

And as the police face this ruthless adversary, Detective George Elms is in no fit state to help. He can barely keep his life together and is desperate to sort things out with his estranged wife and daughter. What is the connection between ruthless former officer Ed Kavski and the wave of killings? And can their boss Helen Webb do anything to stop the carnage?