Dónall Mac Ruairí investigates the events surrounding the explosion of a World War Two sea mine in the Gaeltacht village of Ballymanus in 1943, in which 19 young local men lost their lives. In interviewing the few remaining eye witnesses, Dónall asks the critical questions - what exactly happened on 10 May on Ballymanus Strand? Could it have been prevented? And is there any truth in the local view that an independent inquiry into the incident was actively suppressed?