Nick Vivarelli International Correspondent Tunisian auteur Mohamed Ben Attia’s new work “Behind the Mountains,” which will soon launch from the Venice Film Festival’s Horizons section, sees the director add a supernatural element to the social dramas for which he is known. Attia’s third feature reunites the director with Majd Mastoura, star of his breakout drama “Hedi” — about a repressed young man ignited by a free-spirited woman — which won best debut and actor honors at the 2016 Berlin Film Festival.