The Bill - Season 14 Episode 101 All For One

Santini is first on the scene of a serious car accident, and becomes a bit of a local hero when he bravely dives into the river to secure the car, which is teetering on the edge. However, the driver reveals to him that upon his possession he has a bag of cocaine, a present for his mistress. He asks Santini to destroy it if he doesn't make it. Santini manages to take possession of the bag when he recovers his personal affairs at the mortuary, but when Stamp and Garfield inadvertently discover Santini's misgivings, it's not long before they realise that their fellow officer may be playing for the other side. Harker is on the fence when Santini gives him a cock and bull story about the situation.