Just as Kate and John look like reconciling, Rachel delights in sticking a bitchy spanner in the works by revealing she's sleeping with John.

Elsewhere, Kate's offered a job on reception. And John comes face to face with his nemesis, dangerous drugs baron, Stenga.

Handsome new recruit, DS Luke French is astounded by DI John Keenan's unorthodox methods. Meanwhile, new rookie, Lucy, is overwhelmed to make her first arrest on a dangerous paedophile.