The Regency Hotel attack in 2016 was a significant moment in the Irish drug crime story.
Following the incident, a ludicrous theory suggested that the Gardaí, politicians and media were in on it.
Ireland's drug gangs are heavily intertwined with the world of professional boxing.
Nicola Tallant, author of Clash Of The Clans joined the Last Word to discuss.
Catch the full chat by pressing the Play button on this page.