In the early hours of Good Friday, April 2019, Gerald Corrigan was shot with a crossbow outside his home on Anglesey. The attack proved fatal. The murderer was caught and convicted, but there remain many unanswered questions. The most perplexing being: why? Journalist Siôn Tecwyn covered the case at the time. Working with Meic Parry, producer of ‘The Crossbow Killer’ podcast, he explores the events leading up to the murder and the subsequent investigation. Including unseen content and additional insight from the trial as well as unreported facts about the case which take the story further, *Murder on Ynys Môn *highlights the complexity of this dark and shocking mystery.