Released from prison after killing relatives who abused his sister, ex-soldier John Mercer is recruited into a shadowy Government-run organisation working to eliminate criminals beyond the reach of the law.
Episode 2
Ordered to protect a racist murderer and gangland boss who is secretly a police mole, Mercer has to manipulate events behind Lenny’s back when Calum accidentally kills him in an argument.
Episode 3
When a notorious Albanian gangster arrives in London, Lenny’s plans to ensure his swift return to his native land backfire when Rose is abducted.
Episode 4
When his boss orders him to kill a seemingly innocent man recently acquitted of murder, Mercer decides to keep him alive and investigate the details of the case.
Episode 5
When one of Lenny’s political allies engages the services of his former hitman to carry out a revenge killing, Mercer is plunged into a dangerous game of cat-and-mouse with his wily predecessor.
Episode 6
Things go badly wrong when Lenny targets the kingpin of judicial corruption, and Mercer is hired to assassinate his boss.