The Julia Set (sometimes stylized as Th= {Julia Set}) is an American coming-of-age drama film written and directed by Niki Byrne, starring Chase Infiniti, Gillian Anderson, Christopher Briney, Jason Isaacs, Nina Hoss, Chloe Bailey, Carmen Ejogo, Nico Hiraga, Liz Lin and Alex Dillard.
Premise A young mathematician prepares for a challenging contest.
Cast Chase Infiniti as Julia Christopher Briney as Pascal Gillian Anderson Jason Isaacs Nina Hoss Chloe Bailey as Erin Carmen Ejogo Nico Hiraga as Marcus Liz Lin Alex Dillard
Production The film is written and directed by Niki Byrne. Producers include Jeffrey Penman (p.g.a.), Nick Scherma (p.g.a.), Shaun Sanghani, Gillian Anderson, Eleonora Granata-Jenkinson, Andrey Epifanov, David Treatman, Max Johnson, Lee Stollman, Ellen Goldsmith-Vein and Tayler Haynes. It is produced by Potato Salad Cosmic Domination, in association with SSS Entertainment, G Nus Media, IF/THEN, Grapevine Films, Cinetrain, SA, Melograno Films, Hanway Films, Gotham Group, Good Future and Vacancy Film Fund.
The cast is led by Chase Infiniti, Gillian Anderson, Christopher Briney, Jason Isaacs, Nina Hoss, Chloe Bailey, Carmen Ejogo, Nico Hiraga, Liz Lin and Alex Dillard.
Principal photography was underway in London in October 2025.
Release The Julia Set premiered at the Toronto International Film Festival in September 2026.
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