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.
Special police task forces tackle a hit-and-run in Lancashire which turns out to be a deliberate attack.
Britain's most talented detectives tackle a dangerous arsonist in Bristol and a drug operation in Manchester.
Special police task forces tackle a brutal stabbing of a 16-year-old boy in Preston two days before Christmas.
Police in Surrey are on the case of a violent gang who steal millions of pounds worth of jewellery.
The National Crime Agency, Britain's answer to the FBI, tackle a people-smuggling ring and romance fraud.
