Gerry's guest this week is the Crime Editor of the Sunday World, Paul Williams.
For almost two decades, Paul has reported on the growth of organised crime in Ireland.
It has been a turbulent period - which has included the rise of the drug-barons, the brutal murder of Paul's fellow-crime reporter Veronica Guerin, and the current spate of gangland killings.
Over the years, Paul has exposed many of Ireland's major criminals to public scrutiny - and, as a result, he has had his own life threatened on several occasions.
He now lives with permanent police protection.