A never-before-seen look into the real-life criminal investigations of the UK's most talented and successful sleuths who tackle some of the UK's most challenging criminal cases.
Episode 1
Surrey police investigate a drug-dealing gang, farmers in Northamptonshire are targeted by a gang in the countryside, and a crime squad in Kent investigate residential burglaries.
Episode 2
Detectives pursue a dangerous, violent, drug gang in Gloucester, an aggressive, armed mugger in sleepy Kent and a gang of men stealing Britain's priceless history in Cheshire.
Episode 3
Detectives uncover human trafficking in Bristol, hunt the leader of a county lines gang in Surrey, and trawl through hours of CCTV to stop a vaccine fraudster in London.
Episode 4
Special police task forces tackle violent drug dealers in Gloucestershire, a fraudster in London and a cruel gang making money illegally trading over two hundred wild birds from a pub.
