LIMITED EDITION 4K UHD & BLU-RAY DUAL FORMAT SPECIAL FEATURES 4K restoration of the long-lost original camera negative by Severin Films 4K UHD and Blu-ray presentation of the feature Uncompressed mono PCM Italian and English audio tracks Audio commentary by historians Eugenio Ercolani and Troy Howarth Newly filmed interview portrait of director Riccardo Freda featuring screenwriter Ernesto Gastaldi, long-time collaborators Marcello Avallone and Giovanni Fago, FX artist Sergio Stivaletti and actress Martine Brochard (26 mins) Visual essay by Tim Lucas (29 mins) Featurette on the controversy tied to the soundtrack and composers De Masi and Mannino, featuring film historian Pierpaolo De Sanctis and son of Francesco De Masi, Filippo (28 mins) Trailer Reversible sleeve featuring artwork based on original posters New and improved English subtitle translation for Italian audio and English SDH for English audio Booklet containing new writing by horror expert Kim Newman Limited edition of 5000 copies