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.
Featuring two gunmen killers in Northamptonshire and a multi-million-pound footwear scam in Manchester.
Britain's most talented detectives pursue a violent drug gang in Gloucester and an aggressive mugger in Kent.
Britain's most talented detectives uncover human trafficking in Bristol and track down a vaccine fraudster.
Special police task forces tackle violent drug dealers in Gloucestershire and a gang trading wild birds.
Featuring a violent drug-dealing gang, a gang butchering in the countryside, and residential burglaries.
