Lenny is alerted to the recent arrival of a notorious Albanian gangster Tarek Sokoli. Sokoli wants to put down roots in his new homeland and that includes running drugs and prostitution rackets.

Rather than have him killed, Lenny instructs Mercer, Rose and Calum to scare him away - to send the message to any others planning on setting up in London that their attempts will fail. He wants them to work as a team.

Calum frees the prostitutes that Sokoli’s crew had illegally shipped in by returning their passports.

However, after one of the liberated girls is killed, and a heroin importer is murdered by Sokoli’s lieutenant after Mercer convinced him against doing business with the Albanians, the unit begin to realise that simply executing Sokoli would have created far less bloodshed.

Calum has made Mercer some tea. Problem is that it’s burned and totally lacking in nutritonal value. So off they go to the supermarket. Calum is amazed Mercer knows so much about cooking.

Lenny appears and Mercer's heart sinks. He gives Mercer his next assignment. He must kill a violent criminal just acquitted of the murder of a young woman, Marie Greene. His name is Scott Glover.

Mercer finds him at a hotel and prepares to kill him in the gentleman’s toilets. But his plan is fraught with problems. One of which is that a dogged and brave reporter knows more than he should about the case.