When Lau shows up at the council offices, Sam successfully negotiates the safe handover of Scarlett in exchange for Lau's nephew Jason. But Phil has his own ideas and nearly scuppers the plan. Narrowly escaping, they pay a visit to Phil's mum Linda before taking Scarlett back to her husband. But it's not the happy reunion they imagined, and Sam and Phil must go on the run from both cops and criminals, until finding temporary safety in the hands of enigmatic MI5 agent Walker.