John Palmer is out of jail - but detectives are following his every move. They’re holed up in a secret underground hideout 300 miles from London, after its revealed Palmer has some of Scotland Yard’s top cops in his pocket. Then, he makes himself a target after he threatens to turn super grass.

This podcast includes strong language and descriptions of violence.

Presenter: Livvy Haydock
Series producer: Mick Tucker
Producer: Patrick Kiteley
Technical production and sound design: Nicky Edwards
Additional technical production: Richard Hannaford
Journalism Assistant: Tim Fernley
Production Manager: Sarah Payton
Commissioning editors: Richard Maddock and Dylan Haskins
Editor and executive producer: Carl Johnston