Those with an understanding of Irish history will know the Irish Republican Brotherhood played a pivotal role in the country's politics from the late 19th century to the early 20th century.
The IRB officially dissolved in 1924... or did they?
An organisation claiming to be the IRB still exists today, and Crime and Security Correspondent with the Irish Times Conor Gallagher has been writing about their activities.
Conor joins Séan to discuss.
