Diane tells Barry that their relationship is over. The Short case and it's outcome humiliates Katherine. George changes the shipping container's destination and annoys his partners in crime.
In France, Arnie gets too close in his investigation into Bishop's death and is almost killed in a shooting, and is chased by the Russians. Katherine carries out surveillance on a suspicious kebab shop.
Arnie returns to England with important evidence but Chadwick and the superiors are unhappy with him and Bill, especially. Meanwhile, Montfort is unhappy being shut out of the heroin deal.
Montfort tries to cover his tracks and disposes of Faulds, just as the team gathers evidence after the raid on Fauld's business. Diane becomes begins to mistrust Ryan after a meeting with his ex-wife.
