Chase Infiniti takes on a role built from contradictions in The Julia Set: Julia Fischer is a college freshman with extraordinary mathematical ability, but she is not presented as a detached genius immune to ordinary pressures. She is ambitious, deeply committed to her family and vulnerable to the allure of being understood by someone who speaks her highly specialized intellectual language. That collision of talent, romance and power imbalance drives Niki Byrne’s new drama, which screened in the Special Presentations program at the Toronto Film Festival on September 10, 2026.
Written and directed by Byrne, in her second dramatic feature, The Julia Set runs 112 minutes and uses the world of elite mathematics as more than a decorative backdrop. Julia’s aptitude changes the stakes of every choice around her. A bad relationship could be emotionally devastating for anyone, but Julia is also navigating the possibility of a future defined by scholarships, academic competition and the kind of opportunity that can redirect an entire life.
The film’s central question is therefore not merely whether Julia will recognize a destructive relationship. It is how a person who is exceptional in one area of life can still be inexperienced, conflicted and manipulable in another.
A prodigy with reasons to stay close to home
Julia has already been accepted by a remarkable list of schools, including MIT, Harvard and the University of Chicago. Yet she chooses a smaller local college because it offers the strongest scholarship package and allows her to remain near her mother and older brother, Evan, who has Down syndrome. Carmen Ejogo plays Julia’s mother, while Alex Dillard plays Evan.
That choice gives the character a grounded dimension. Julia is not chasing prestige for its own sake, and she does not appear to have an oversized ego about her gifts. Infiniti’s performance reportedly keeps Julia’s intelligence casual and lived-in rather than announcing it in every scene. She is disciplined and capable, but still young enough to be caught between asserting what she knows and accepting the lead of someone who seems more worldly.
It is an especially important balance for a story about intellectual achievement. Movies often turn gifted characters into either tortured eccentrics or walking collections of impressive facts. Julia instead has a broad range of wants: she wants to succeed, to look after the people she loves, to become an adult on her own terms and to be in love. The pressure comes from those goals refusing to line up neatly.
Pascal sees Julia — and turns connection into competition
Christopher Briney plays Pascal, Julia’s teaching assistant. He notices her abilities, flirts with her and introduces her to a higher-level circle of students. The attraction has an understandable basis: they are both intensely engaged by mathematics, and their rapid, dense conversations give them a connection few people around them can share.
But the structure of their relationship is immediately fraught. Pascal is a TA, Julia is a first-year student, and the professional boundary makes his attention more troubling than a typical campus romance. The film reportedly does not reduce Julia to someone who simply fails to spot obvious danger. She understands the situation’s complications, even as she is drawn toward Pascal and the promise of closeness he represents.
Related coverage includes ‘The Julia Set’ Makes a Math Prodigy’s Bad Romance Feel Urgent.
Pascal’s interest is also inseparable from his insecurity. He admires Julia’s intelligence, but he is compelled to measure himself against it. A poor showing on a practice test reportedly triggers an alarming outburst: Pascal leaves the classroom, strikes himself, punches a bulletin board and swears in frustration. It is an early indication that his sensitivity about achievement is not just a personality quirk.
That dynamic makes the romance feel less like a conventional love story with obstacles and more like a contest Julia never agreed to enter. Pascal’s access to her academic environment, combined with his competitiveness, turns admiration into something potentially controlling.
The Putnam Competition raises the cost of every mistake
Pascal brings Julia into an advanced study group overseen by Dr. Zatlan, played by Nina Hoss. Zatlan is preparing the students for the Putnam Competition, the longstanding mathematics contest famous for its punishing format: 12 questions that have tested participants for roughly a century. The college’s team is competing, but every student is also judged as an individual.
For Julia, success in that setting could strengthen a path to MIT and beyond. The contest supplies the film with an outward deadline, but it also mirrors the relationship at its center. Mathematics is supposed to be Julia’s area of clarity and confidence. Once Pascal’s need to win contaminates their bond, the thing that brings them together can become another instrument of pressure.
Byrne’s approach appears to make the technical material part of the drama rather than an obstacle viewers must endure. The exchanges between Julia and Pascal are said to move quickly and with specificity, letting their shared fluency register as attraction. The same conversations also establish why Pascal can seem uniquely appealing to Julia before the warning signs become impossible to ignore.
For audiences accustomed to games where systems knowledge determines survival, the tension may be familiar: mastering a difficult ruleset does not guarantee good judgment when another player changes the terms. That kind of uncertainty is also what makes strategy games compelling, including the different rhythms explored in this comparison of Pikmin and Pikmin 2. Julia can solve formidable problems, but people are not equations with a clean proof at the end.
A family history of achievement and damage
Pascal’s home life sharpens the picture. Jason Isaacs plays his father, Andrew Mandelbort, a celebrated mathematician whose charisma sits beside an apparent compulsion to compete with his own son. A chess scene between father and son reportedly conveys years of rivalry without requiring the film to pause for a long explanatory speech.
Gillian Anderson plays Pascal’s mother, adding another perspective to a household shaped by Andrew’s behavior. Her presence helps avoid a simplistic account in which Pascal’s actions exist in a vacuum while still not excusing them. The film traces how patterns of humiliation and competition can pass through a family, then emerge again in an intimate relationship.
That context matters because The Julia Set is not framed as a lecture about why people should leave at the first sign of trouble. It is more interested in the murky reality of attachment: a person may recognize red flags and still be invested in the affection, status, intellectual companionship or imagined future surrounding the relationship. Julia’s choices carry consequences, but the story’s focus is on the complicated process of seeing a harmful situation clearly.
More than a campus romance
The film ultimately heads toward a climactic math competition, while other crises intensify around it. The story includes Adderall misuse, a car accident and escalating gaslighting, all of which put additional strain on Julia’s ability to trust herself and retain focus. Those events could easily make a lesser drama feel overloaded. Here, Byrne’s direction has been praised for maintaining momentum and coherence as the personal and academic threads converge.
Infiniti has a demanding task at the center of it all. Julia must be credible as someone whose ability is exceptional, credible as a daughter and sister with responsibilities beyond campus, and credible as a young person confronting manipulation from someone she cares about. The performance’s strength lies in not treating those identities as competing gimmicks. Julia’s brilliance does not erase her inexperience, while her emotional uncertainty never cancels out her capability.
Briney, Hoss, Isaacs, Anderson, Ejogo and Dillard give the film a cast that can support that character study from several directions. Chloe Bailey, Nico Hiraga and Liz Lin also appear. Behind the camera, Antonio Calvache serves as cinematographer, James LeSage edits, and Dustin O’Halloran and Herdís Stefánsdóttir composed the music.
The Julia Set comes from A Potato Salad Cosmic Domination, The Gotham Group, G Nus Media, Cinetrain and Melegrano. Its producers include Jeffrey Penman, Nick Scherma, Shaun Sanghani, Gillian Anderson, Eleonora Granata-Jenkinson, Andrei Epifanov, David Treatman, Max Johnson, Lee Stollman, Ellen Goldsmith-Vein and Tayler Haynes.
Most importantly, the film’s math premise seems to be doing genuine dramatic work. Julia’s aptitude is not a cute trait attached to a familiar romance plot; it magnifies both her possibilities and the danger of losing control over her own direction. Byrne uses the competitive academic environment to examine a more universal problem: intelligence can help someone identify a pattern, but it cannot always make them emotionally ready to escape it.
