Celluloid Nightmares has acquired worldwide sales rights to the Spanish horror film following the world premiere at Sitges.

The project marks the directorial debut of 27-year-old Mexican Fernando Barreda Luna and shot entirely in Spain. Luna’s business partner Jessica Villegas Lattuada produced on behalf of their production company Nabu Films alongside David Sanz for Silencio Rodamos.

Atrocious focuses on the case of a brother and sister who investigate a local urban myth while on holiday, resulting in strange occurrences at the family’s summer house.

Celluloid Nightmares launched in Cannes earlier in the year and is a partnership between Hengameh Panahi’s Paris-based Celluloid Dreams and Los Angeles-based XYZ Films, founded by partners Nate Bolotin, Nick Spicer and Aram Tertzakian.

Atrocious is an unforgettably haunting film,” Bolotin said. “Fernando Barreda Luna has masterfully crafted a story that will surely shock and terrify audiences everywhere.”

Celluloid swooped immediately after the world premiere and will show a new trailer to buyers next week. The slate includes A Horrible Way To Die, Fubar: Gods Of Blunder and Norwegian Ninja.