Series following the work of the Thames River Police. The River Police's patch covers 250 miles of waterways around London, and these are a magnet for the criminal underworld - acting as an ideal hiding place for both people and evidence.

After a violent robbery in London's Docklands, the specialist diving team must retrieve evidence thrown into the dock. And when a man evades arrest by swimming to an island in the middle of a lake, the river unit is called in to help out. Show less