Apple TV's 'Ascension' Adds Three Actors to Its Thriller Cast

Apple TV’s upcoming series Ascension has expanded its main cast with three new additions. The network hired Amanda Plummer, Christopher Chung, and T'Nia Miller as series regulars. The studio is keeping the specific roles these actors will portray under wraps.

The hires build on an existing ensemble led by Caitríona Balfe. Bill Nighy was also recently announced as a star of the show. This marks the final stage in assembling the principal cast for the production.

The series adapts Last Days, a novel by Adam Nevill. In the story, Balfe plays Rose, a documentary filmmaker and recently divorced mother. The character is described as brilliant at uncovering the truths of others but struggling to resolve her own. The plot begins when Rose starts work on a project about the Church of Ascension, a mysterious 20th-century cult. She finds refuge in its teachings until she discovers something more insidious beneath the surface.

Alfonso Cuarón co-writes the series with his brother Carlos Cuarón. Natalie Erika James and Christian White also serve as writers. All four are executive producers on the project. James and White are the co-showrunners, with James set to lead the directing. Balfe will executive produce in addition to starring.

Esperanto Filmoj, the banner through which Cuarón executive produces, holds an overall television deal with Apple. Gabriela Rodriguez and Richard Schwartz will also executive produce for that company. Steve Golin, David Levine, and Zack Hayden are executive producers for Anonymous Content. Anonymous will produce the show, while Apple Studios serves as the studio.

The production team brings together writers and directors who have previously collaborated. James and White worked together on Apartment 7A and Relic. The series remains in development with the new cast attached for the 2026 release cycle.