S1, E102: Sean’s decree is final: no gang can operate in London until Finn Wallace’s killer has been found. Except the rule isn’t being applied to everyone. Asif Afridi – a powerful Pakistani gang leader - is still bringing heroin into the country. But when one of Asif’s shipments is raided, this unleashes a chain of events that threatens further violence. And leads Sean Wallace to discover that there are people close to him who have disobeyed his orders. But there are other problems to solve. A loyal employee of the Wallaces has been found dead – and with him, Sean’s best hope of finding his father’s killer. But everything changes when word reaches Sean that his father’s killers can be traced to a Traveller’s campsite. Whatever Sean chooses to do next, it’s not going to be quiet. Meanwhile, Elliot is sent on a mission to find Billy, Sean’s missing brother.