Luther remains tortured by the past a year on from the death of estranged wife Zoe and friend Ian Reed's betrayal. Alice is in a psychiatric unit and Ripley is stuck in uniform whilst Luther shuts himself away with dusty files working on cold cases.
News of Ripley's abduction devastated Luther but he refuses to believe that he is dead. Luther leads the investigation, knowing that Cameron has an ultimate plan that is far more scary than any of his previous murders.
Luther's affections for Jenny continue to increase. He ends up decising to take a holiday from work but their domestic morning is interrupted with news of a unhappy attack at a petrol station. Luther is forced to return to work but warns Jenny to be careful before he leaves. Baba and her thugs continue to make their demands on Luther.
Luther finds both his personal and professional life spiraling out of control as he attempts to cover up a death and keep a suspicious Baba happy. He also has to protect Jenny from anymore harm. There is also a hugger at large whose rules his actions by the throw of a dice.