‘Ascension’: ‘Slow Horses’ Star Christopher Chung Joins Caitríona Balfe in New Apple TV Horror Series!!

After the complete dominance of Ted Lasso‘s fourth season on the streaming charts, it was going to take something special to steal its crown. Stumble in Head of Slough House, Jackson Lamb (Gary Oldman), and the sixth season of Apple TV‘s hit spy thriller Slow Horses. The finale of the sixth season, “Judgment Day,” was so popular it defeated Ted Lasso and left fans with their jaws on the floor, desperate for the confirmed seventh and eighth seasons to arrive.

Slow Horses is one of the most important shows on Apple TV, and its influence can be felt across the streamer’s catalog. That now includes an exciting upcoming horror project that has just added one of Slow Horses‘ best stars to its growing cast. Earlier this week, it was announced that the brilliant Bill Nighy had been added to the cast of Ascension, an upcoming horror project from four-time Academy Award winner Alfonso Cuarón. This came following Nighy‘s recent casting in Star Trek: Starfleet Academy Season 2.

Inspired by the novel Last Days by Adam Nevill, Ascension is led by Outlander star Caitríona Balfe, who will portray Rose, described in the synopsis as “a relentless documentary filmmaker and recently divorced mother, brilliant at uncovering others’ truths but struggling to resolve her own.” The synopsis continues, “When Rose begins a project on a mysterious 20th-century cult known as the Church of Ascension, she finds unexpected refuge in its teachings – until she discovers something far more insidious beneath.“

A ‘Slow Horses’ Star Has Joined Ascension

So which Slow Horses star will join Apple TV‘s shiny new horror adaptation? Christopher Chung, known for playing the arrogant computer nerd Roddy Ho in the spy series, has been added to the cast of Ascension. Run‘s Amanda Plummer and T’Nia Miller of The Haunting of Bly Manor and VisionQuest fame will join Chung in the cast. Cuarón, his brother Carlos, Natalie Erika James, and Christian White will co-write and executive produce the series, with star Balfe also executive producing. Apple TV‘s 2026 horror series Widow’s Bay recently picked up 14 wins from a total of 19 nominations at this year’s Primetime Emmys.