Through its two-hour run time, “I Swear” maintains a remarkable tonal balance that elevates it from an entertaining film to a truly great one. It approaches Tourette syndrome with searing intimacy, never shying away from the awful consequences that those who live with it endure, and yet it also recognizes the humor inherent in its manifestations. The film masterfully presents its subject’s tics?— shouting “half-price heroin!” in front of police officers, “I’m a pedo!” during a job interview or “fuck the Queen!” during an audience with Elizabeth II herself — as simultaneously horrifying and outrageously funny. The movie’s command of its emotional register also allows it to be unexpectedly poignant as it tells an extremely personal true story that’s both heartbreaking and inspiring.
In 1983, Scottish 12-year-old John Davidson (Scott Ellis Watson) lives a seemingly ordinary life. He excels as a soccer goalie and is encouraged by his father to pursue the sport professionally, while also preparing to begin secondary school. Suddenly, while reading aloud in a class, he begins to experience involuntary motor tics. He twitches and yelps uncontrollably, which later escalates to spitting and shouting swear words. John’s life is turned upside down, and he is left completely isolated as those around him fail to understand his condition. His classmates bully him relentlessly, his school’s headmaster beats him with a belt and his bewildered parents chastise him for what they think is his deliberate behavior. John’s father eventually abandons the family, leaving him and his siblings in the care of their overwhelmed mother Heather (Shirley Henderson).
These early scenes are unflinching and deeply upsetting in the way they present the sudden rupture of this young boy’s life for reasons outside of his control. More than simply establishing his Tourette’s, the opening act reveals the cruelty of a world that meets difference with punishment rather than compassion. The people who should support him are woefully unprepared to do so, dismissing his condition as an act or a cry for attention. Watson’s performance is authentic and heartbreaking, capturing a boy horrified by his own body as it betrays him in ways he cannot control.
Thirteen years later, a now-adult John (Robert Aramayo) still lives with Heather and takes medication to control his outbursts, though it is largely ineffective. He reconnects with his old school friend Murray (Francesco Piacentini-Smith), who has returned to their hometown to look after his mother Dottie (Maxine Peake) following her terminal cancer diagnosis. Despite a disastrous first meeting, John finally finds acceptance in Dottie’s treatment of him. Inspired by her own illness to make a positive difference, she invites John to live with them as he searches for a job. In a tear-jerking, deeply cathartic moment, she instructs him never to apologize for his tics to those who already know about them. For the first time, John’s suffering is met with true understanding.
As John dedicates himself to work at a community center under aging caretaker Tommy (Peter Mullan), he finds belonging and grows more confident, even as he suffers setbacks like multiple arrests and beatings due to misunderstandings caused by his outbursts. Tommy urges him to spread awareness about Tourette’s, and John gradually comes to a transformative realization: What matters is not fixing or curing his tics, but building a community for others with Tourette’s and championing understanding for those who, like him, have spent their lives being misunderstood.
In an especially endearing scene, a family brings their daughter, who also suffers from Tourette’s, to meet with John. The two scream and swear at each other in the backseat of their car until eventually they dissolve into shared laughter, finding solace in their mutual recognition and understanding. John resolves to connect and support Scottish people with Tourette syndrome, channeling his painful experiences into lessons for children with the condition and their parents.
“I Swear” unabashedly works to raise awareness of Tourette syndrome, but it never comes at the cost of humor or emotional heft. Aramayo’s phenomenal performance anchors the film with remarkable physical precision and emotional depth, capturing both the toll of John’s tics and the quiet resilience of a man who refuses to be defined by them. The film deftly mines humor from crude lines like “spunk for milk” before turning, with breathtaking ease, to moments of aching tenderness that leave audiences laughing through tears they didn’t see coming.
In a cruel twist, the real-life Davidson made headlines at the 2026 BAFTAs — where Aramayo took home the award for best actor — after an involuntary outburst in which he shouted a racial slur. Though the moment was painful for Davidson and many who witnessed it, the public outcry against him served as a sobering reminder of precisely why the film’s mission matters. Jamie Foxx, for instance, commented on social media that Davidson “meant that shit,” refusing to accept that the remark was beyond his control. Even now, decades into Davidson’s advocacy, the world remains quick to condemn and slow to understand, treating the symptoms of a neurological condition as expressions of character. “I Swear” is not just a tribute to one man’s life but a call to keep doing the work he started — because, clearly, there is still so much of it left to do.
“I Swear” was released internationally in October 2025 and is now playing at the Nugget Theater through May 7.
