Two emotionally scarred young people find both love and tragedy as they run away together in this drama. Marcy (
Robin Tunney) and Seth (
Henry Thomas) meet while shoplifting at the same department store; Seth is the son of an angry, abusive father and steals out of rebellion, while Marcy suffers from Tourette's Syndrome, which causes her to compulsively curse, flail about, and indulge in anti-social behavior. The two misfits find a common ground in each other, and they decide to hit the road. Marcy has always wanted a black "You Do The Hairdo" Barbie doll head, and they drive off to Toronto to find one. However, when a pharmacy along the way refuses to refill Marcy's prescription for her Tourette's medication, she and Seth decide to rob the drugstore, and Seth is shot by the pharmacist. An aging tow truck driver named Walter (
Michael Parks) shows mercy on them, but his hospitality proves short-lived thanks to Marcy's increasingly violent outbursts.
Robin Tunney's performance in Niagara Niagara earned her the prize as Best Actress at the 1997 Venice Film Festival. ~ Mark Deming, All Movie Guide