A bloody and bitter feud between two of Glasgow's most notorious crime families which has raged for more than two decades, leading to violence and murder. Why the Daniel crime group and the Lyons crime group fell out isn't clear.

The story goes it was linked to the theft of a stash of drugs - or because the Lyons were encroaching on Daniel territory. Whatever the cause, the dispute exploded into a series of astonishingly violent tit for tat attacks which have cast a dark shadow over the city of Glasgow. The most high profile - the very public assassination of Daniel's enforcer Kevin "Gerbil" Carroll. He was shot dead in a hail of bullets in front of terrified shoppers in an Asda car park in 2010.

Delving into Glasgow's gangland past and its history of violent crime, the series hears from former gangsters, ordinary members of the public caught up in this vicious turf war and the police officers fighting to take down the mobsters. Many of those at the heart of the violence are now locked up in prison - or dead. But the fear is that this is a feud which is so ingrained it could go on for generations to come.

Presenter Livvy Haydock Series producer: Paul Grant Producer: Patrick Kiteley Journalism assistant: Tim Fernley Editor and executive producer: Carl Johnston

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