Love/Hate and Derry Girls stars to appear in new RTÉ comedy

We all know how brilliant Irish weddings are. And how we usually leave them with a story or two!

So it makes sense that RTÉ is making a television series surrounding a wedding.

They have announced a brand new comedy-drama series written and directed by award-winning Irish screenwriter John Butler, about an Irish wedding in Spain; a week of day-drinking and chaotic nights where secret fears, jealousy and desire bubble to the surface.

These Sacred Vows stars Love/Hate’s Tom Vaughan-Lawlor, Derry Girls star Justine Mitchell, The Man in the High Castle’s Jason O’Mara and Normal People actor India Mullen.

These Sacred Vows series opens the morning after the wedding, when the body of a priest is found floating face-down in the swimming pool of the young guests’ villa. Over the course of six episodes, the action jumps back in time to revisit the key events of a wild previous week, each from the perspective of a different character.

Fr. Vincent is played by Tom Vaughan-Lawlor, mother-of-the-bride Sandra by Justine Mitchell, father-of-the-bride Jerry by Jason O’Mara.

The cast also includes Adam John Richardson (Vikings: Valhalla, The Dry), Tom Hanson (Brassic, The Outlaws), Jade Auguste (His Dark Materials, Trauma), Aaron Heffernan (Brassic, Femme) and Aoife Hinds (Normal People; Dune Prophecy). Also joining the cast are Irish comedians Shane Daniel Byrne and Catherine Bohart.

These Sacred Vows will air on RTÉ in 2026.