Episode 4

In Redditch, Worcestershire, it takes determined policing to track down an elusive Polish drug dealer who has already been sentenced to a total of 45 years behind bars back home. In the Netherlands, Amsterdam's Serious and Organised Crime team spend months tracking down two Liverpool gangsters who ran a campaign of terror from a prison cell. Their time on the run abroad comes to an end because their own mobile phones give them away. In West Yorkshire the search for a wanted man takes on an unexpected twist as PCs Dave Lockwood and Tom Allen discover a huge cannabis farm at an address linked to a fugitive. And the National Crime Agency launch an appeal in the Netherlands to help them track down some of the UK's most wanted.