Britain's most talented detectives pursue two gunmen killers in Northamptonshire, distraction burglars who have been posing as police officers in Kent and a multi-million pound footwear scam in Manchester.
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.
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.
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.
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.
Special police task forces tackle a hit-and-run in Lancashire which turns out to be a deliberate attack on a single mother and they also tackle a drug-dealing family dynasty in Bury.
Some of Britain's most talented detectives tackle a dangerous arsonist in Bristol, a drug smuggling operation in Manchester, and a family committing shocking animal cruelty in Cheshire.
Special police task forces tackle the brutal stabbing of a 16-year-old boy in Preston two days before Christmas and Northamptonshire police target a drug-dealing gang on a housing estate.
Police in Surrey are on the case of a violent gang who steal millions of pounds worth of jewellery and Avon and Somerset police tackle guns being sent through the post from Miami.
Britain's answer to the FBI, the National Crime Agency, tackle a people-smuggling ring, a Ghanaian cocaine smuggling operation and organised online romance fraud.