 Bar-Lev’s big reveal is a bust, and turns what could have been a compelling inquiry into the machinations of the art market and media into a tawdry embarrassment.Apart from the questionable ethics, it’s lousy art.In the final analysis, the filmmaker’s crisis of faith is unconvincing, except as one of a series of blatantly manipulative decisions that, despite the lack of any kind of empirical evidence, bolsters the most commercially viable story that can be milked from the situation — the one where Marla’s parents are supernaturally cunning con artists out to exploit the gullibility of the deluded collectors of essentially fraudulent modern art."