Set in a small village on the west coast of County Mayo, the play tells the story of lonely dreamer Christy Mahon who takes refuge in Michael Flaherty's pub, claiming that he has killed his oppressive father. Christy beguiles the locals with his tall and dramatic tale of bravery in the face of danger and becomes an instant hero. However, when his tale turns out to be less straightforward than they first thought, the simmering violence of the villagers comes to light.
The cast will also include Ruth Negga as Pegeen Mike and Niamh Cusack as Widow Quinn, with additional casting to be announced. The production will be designed by Scott Pask.
Sheehan is best known for his role as Nathan in the E4 television series Misfits, for which he received a BAFTA nomination. Additional film and television credits include RTE's Love/Hate, Killing Bono, Season of the Witch, and the Red Riding trilogy.