On Monday, a retired superintendent and four serving gardaí were found not guilty of perverting the course of justice, following an eight-week trial at Limerick Circuit Court.

Mick Clifford, special correspondent with the Irish Examiner, has followed this case since it began more than six years ago. He joins The Last Word to discuss the outcome and questions why criminal charges were ever brought.

Hear the full conversation by pressing the 'Play' button on this page!