MADRID — Barcelona’s Escandalo Films, one of Spain’s key producers of genre pics, the country’s biggest movie export commodity, has greenlit its latest fantasy film, the chiller “Colmillos” (Fangs).Film Factory Ent. has acquired international rights outside Spain. Alberto de Toro, who cut his teeth editing Mexican-Spanish Aztec curse chiller “KM 31″ and Spain’s “Ghost Graduation,” will make his directorial debut on “Fangs,” working from a screenplay with novelist Salvador Macip. Adapting the award-winning young-adult bestseller of the same title, written by Macip and Sebastian Roig, “Fangs” turns on a troubled teen who is kidnapped, shuttled to a house in the mountains, and forced to work as a slave. The only escape is through a dark forest where mysterious, savage creatures lurk. “Fangs” rolls September. A wide-audience film in the line of “The Descent,” according to Film Factory founder Vicente Canales, “Fangs” producer Escandalo has emerged as one of Spain’s most exciting production companies, working with alums from Barcelona’s Escac film school, such as Juan Antonio Bayona, who has the Summit-sold “The Impossible” in post, Alex Pastor, who helmed Paramount Vantage’s “Carriers,” and “Pan’s Labyrinth” editor Bernat Vilaplana. “Fangs” cinematographer is Arnau Valls, who lensed Escandalo’s Daniel Bruhl starrer “Eva”; Alex Villagrasa (“Buried,” the “REC” franchise) handles special effects. “Fangs” consolidates a Film Factory-Escandalo production-sales axis. Film Factory is repping Escandalo’s buzzed-up, “Donnie Darko”-ish “Animals,” with Martin Freeman, and will screen its multi-episode romancer “Puzzled Love,” the first feature of 13 final-year Escac students.