RTÉ has commissioned a new drama series based on one of Ireland’s longest-running murder trials. The series, titled *Mr Moonlight*, will star Brendan Coyle, known for his role in *Downton Abbey*. Coyle will portray Bobby Ryan, a central figure in the trial that has captivated public interest for decades. The drama will explore the legal and social tensions surrounding the case, offering a dramatized account of the trial’s key moments. The production is expected to highlight the complexities of the legal system and the cultural impact of the case on Irish society.