Cillian O'Sullivan's Filmography on TV

BLUE MOON (2025)

On the evening of March 31, 1943, legendary lyricist Lorenz Hart confronts his shattered self-confidence in Sardi’s bar as his former collaborator Richard Rodgers celebrates the opening night of his ground-breaking hit musical “Oklahoma!”.

Misty Button (2019)

James, who has just burned his last bridge and now lacks both a job and a wife, teams up with friend Eoin on a for-hire mission to the racetrack on behalf of slippery raconteur Timmy Thomas. In a clumsy attempt at sleight of hand by a pair who wouldn’t know a winning hand if they saw one, the boys screw up royally, putting themselves under heavy obligation to a clutch of gangsters. There’s a new angle when a bold lady with a soft spot for the sound of Irish and the hots for greenbacks sets her s

Nightfall (2014)

Set between the events of Halo 4 and Halo 5: Guardians… Halo: Nightfall tells the dramatic story of legendary man hunter and Naval Intelligence Officer Jameson Locke and his team as they are caught in a horrific biological attack while investigating terrorist activity on the distant colony world of Sedra. As they unravel a plot that draws them to an ancient, hellish artifact, they will be forced to fight for their survival, question everything and ultimately choose between their loyalty and thei