After the failure of the pill operation, Roach turns to Yorkie, a violent armed robber, to solve his cash flow problems. Troubled by the terrifying intel they gather on Yorkie, and his links to their crew, the Unit set out to find and track him. Yorkie could help them get deeper, but with Cartwright's old adversary DCI Stannard determined to shut down the Unit, finding a wanted man like Yorkie could also get the police off their backs. (thetvdb.com)