Amid festivals clogged with so many films with “prestige” ambitions, it’s a thrillingly welcome jolt when a really fun movie executes on a clever concept and is impeccably entertaining from top to bottom. And that was exactly the case when the good word of Tuner started rippling through queues at Telluride before putting on the full charm offensive in Toronto a week later. Making the transition from pulse-pounding documentary filmmaking to small-stakes crime romance, Daniel Roher does exactly that with a film that just moves from the jump and never lets up until the closing credits.