I SWEAR – Movie Review

Movie Review: I Swear

Whether you’re a fan of the John Michael Montgomery original version or the famous cover done by All 4 One, the song “I Swear” has absolutely nothing to do with the biographical film about a Scotsman with Tourette’s. (And if you clicked on this video because of what happened at the BAFTAs, go to the very end of the video as I have provided some commentary.)

Diagnosed with Tourette’s at 15 and targeted as insane by his peers, John Davidson struggled with a condition few had witnessed. Campaigning for better understanding and acceptance of the condition of Tourette’s as an adult, he finds his life’s purpose through strife and love. This stars Robert Aramayo (who you may recognize from Prime Video’s *The Rings of Power*), along with Maxine Peake, Peter Mullan, and Shirley Henderson. The story is based on John Davidson’s life, and it sheds light on a condition that still few really have an understanding of.

A Deeply Personal Connection

I also have Tourette’s, so this was a poignant and sometimes piercing watch for me. I don’t have the verbal tics—mine are mainly muscular, along with an auditory tic, and some compulsive behaviors.

The story begins at the end, when Davidson is older and being recognized for his influential work in Tourette awareness throughout the UK. While the opening of this is hilarious, the movie transitions to Davidson’s early teen years when his symptoms went into full bloom. Now, it may seem insensitive that I said the opening sequence is hilarious, especially because it involves a very inopportune outburst, but that’s what the film excels at: merging amusing humor with awkward situations and painful interactions. Never was this film making fun of Davidson or his condition, but events are naturally laughable, and the story doesn’t shy away from those—just like it also doesn’t evade the biting comments or isolating treatment that Davidson endured.

The Cruelty and Confusion of Youth

The young actor who played the teen version, Scott Ellis Watson, delivers a brilliant performance. He showcases the appropriate level of horror, shame, and confusion that any young person who started developing movements and vocalizations that they couldn’t control would feel, especially at an age when kids are at their most cruel.

This was a tough thing for me to watch because it brought up all the emotions and experiences I felt as a kid, both from strangers, schoolmates, and my family. Just like with Davidson, there wasn’t much awareness around this in the ’80s, so it was much easier for others to assume the behaviors were to attract attention or to just cause a commotion. But as the film states in a certain sequence: *who in their right mind would want to be sneered at, made fun of, mocked, and derided just to carry out some fake bit?*

Aramayo’s Masterful Lead Performance

While Watson shines as the young Davidson, the adult version we follow for the majority of the film is portrayed by Aramayo, and he is devastatingly right on point. He deftly balances the frustration, self hatred, discouragement, and loneliness that most with Tourette’s experience at some point, as well as showcasing the absolute desire to fit in, have friends, or find a partner.

Aramayo is so convincing that I forgot he was acting as though he had Tourette’s. And again, just to be clear, he’s never making fun of the condition or Davidson. The sensitivity the film contains is heartwarming, even while it’s crushing our hearts to show how the outside world treated him.

 A Stellar Supporting Cast

The film equally focuses on the drama and the humor to create a well rounded narrative that inspires and educates as well as entertains. And a lot of that has to do with the supporting cast.

Shirley Henderson plays Davidson’s mom, and while the emotion I mainly felt towards her was disdain, I can also give understanding because of her ignorance of Tourette’s. This doesn’t excuse the hard hearted treatment, which Henderson delivers without really ever raising her voice. But she’s not a wholly despicable character, either.

The two who really stand out as champions for Davidson are Maxine Peake and Peter Mullan. She becomes a sort of surrogate mom, and the level of compassion and patience given to Davidson is immense. Peake fully embraces the understanding of a character who has nothing but empathy and concern, making her a mother figure that just about anyone would want in their corner.

And then with Mullan, he plays a community center employee who eventually hires Davidson. While there are some very funny and touching conversations that they share, a courtroom scene that allows Mullan a monologue could be used as the elevator pitch to inform others on how the auditory and muscular tics of somebody with Tourette’s appear uncontrollably, and how those have no bearing on the thoughts or integrity of the person delivering the words.

Final Verdict: An Educating and Entertaining Triumph

Several times through this, I teared up some out of sadness or painful memories, others at just the beauty and respect that is clearly evident through the storytelling. The film doesn’t overstay its welcome, and even though it is right at two hours, the pacing keeps the story moving efficiently through the experiences. This also doesn’t come across as moralizing or preachy. The story didn’t work to shame those who have little or no knowledge of the condition, but instead educates through entertainment, melding the seriousness of the topic with the laughable moments that are inherently present.

It’s clear why Robert Aramayo won the Best Actor award at the BAFTAs for his performance. He took a condition and character that could have become a punchline and brought out the soul of the person, highlighting all the negative impressions others have while also demonstrating the resolve and selflessness Davidson employed when bringing awareness to a very visible condition. It is certainly one of the best films of 2025, and although most probably had to wait until now in 2026 to watch it, it’s going to be vying for one of the best of the year.

Rating: I give I Swear 5 out of 5 couches, and it’s not just because I also have Tourette’s. This is truly a brilliant film, story, presentation, and acting achievement, and it really should be seen by everyone.