Cillian Sullivan portrait

Cillian Sullivan

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Cillian Sullivan is credited in the film Blue Moon, released in 2025, in the role of Stephen Sondheim. The appearance marks a notable point in their filmography, given the film’s release year and the character portrayed.

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Cillian Sullivan is credited in the film Blue Moon, released in 2025, in the role of Stephen Sondheim. The appearance marks a notable point in their filmography, given the film’s release year and the character portrayed.

Sullivan’s involvement in Blue Moon indicates a contribution to a cinematic work featuring a historical figure, specifically the composer and lyricist Stephen Sondheim. The credit reflects their participation in a narrative-driven production.

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Filmography

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