I Swear

The film follows Scottish teenager John Davidson as severe Tourette syndrome emerges in the 1980s, provoking misunderstanding from schoolmates, adults, and strangers. With support from people who recognize the condition, he begins building an independent public life.

Scott Ellis Watson and Robert Aramayo portray John at different ages as one continuous, complicated self. Period detail, public responses, family support, and the physical strain of involuntary tics keep the biography grounded in lived experience.