Alice is now in a mental institution and Luther,after a failed suicide attempt,returns to work having been cleared of killing Zoe. Assisted by the loyal Justin he joins a team headed by Superintendant Schenk hunting a masked serial killer. Luther pursues a suspect,failed art student Cameron Pell,who escapes after attacking him and later phones to say he wants to emulate the Victorian killer Spring-Heel Jack. Luther also agrees to help Caroline Jones,widow of a man he once arrested,to stop her young daughter Jenny from appearing in hard core sex films and kidnaps the girl from a film set. Written by don @ minifie-1

Pell abducts and tortures Justin,who keeps himself alive by flattering the killer's vanity and manages to free himself and escape whilst Pell is out planning his climactic outrage,which Luther and the team,by speaking to Pell's former associates,are able to stop. Procuress Baba,who claims to 'own' Jenny Jones,forces Luther to stop police witness Andrei Kolchak from giving evidence against her crooked grandson Toby - causing Luther to bring Jenny to stay with him for her own protection. Earlier that night he has had a visit from Alice,who has escaped from her institution. Written by don @ minifie-1

Luther leaves Jenny in his flat to investigate an incident at a service station where a man with a baseball bat killed one motorist,maimed another and destroyed their cars. From CCTV footage it appears that he was rolling dice to select victims. The same man later enters an office disguised as a motor-cycle courier and kills five more people before Luther arrests him though in custody he refuses to speak. As Luther returns home to find that Jenny has killed Toby Kent after his attempted rape of her the dice man's exact double prepares another outrage. Written by don @ minifie-1

Luther and Jenny dispose of Kent's body and give Baba cause to believe that he was actually killed by her other henchman Frank. To ensure that there will be no reprisals he threatens her with the ultimate weapon of revenge - Alice. Meanwhile the second dice man murders four people on the subway and Luther deduces that the two killers are twins,competing to see who can claim the most victims. With this in mind he plays on the vanity of his prisoner,Robert Millberry,to help him net his brother Nick,leading Luther into a showdown with Nick Milberry. Written by don @ minifie-1