Fifty years ago today, a series of no-warning car bombs erupted across Dublin and Monaghan.  This would prove to be the bloodiest day of the Troubles. Immediately, questions were raised about how this event had come to pass. In a new documentary, director Joe Lee and producer Fergus Dowd explore what happened on 17 May 1974. Warning: This episode is quite graphic in describing the day. This episode of the podcast is dedicated to the memory of Derek Byrne.