"Threshold" is an autobiographical documentary made by a mother who follows the gender transition of her adolescent son, addressing the conflicts, certainties, and uncertainties that pervade... Read all"Threshold" is an autobiographical documentary made by a mother who follows the gender transition of her adolescent son, addressing the conflicts, certainties, and uncertainties that pervade him in a deep search for his identity."Threshold" is an autobiographical documentary made by a mother who follows the gender transition of her adolescent son, addressing the conflicts, certainties, and uncertainties that pervade him in a deep search for his identity.