A series of jewellery robberies coincide with the return of Lord Ashfordly's sister.
There's a visitor from Gene Hunt's old stomping ground of Manchester. Jackie Queen is a journalist who's had run-ins with Gene in the past and this time she has a surprise in store. Alex is suspicious of Jackie, and with the threat of a transfer haunting Gene, she's desperate they get to the bottom of the corruption she believes is in the force.