Inventive horror in which a sound engineer working in the confines of an Italian movie studio becomes dangerously absorbed in his work. The tale is set in the 1970s, when Italian horror films, particularly those belonging to the 'giallo' genre, were known for being shot soundless, with the effects and language tracks added later so that the movies could be dubbed into multiple languages and marketed more effectively abroad. The British sound engineer, Gilderoy (Toby Jones), works in one such studio, stabbing and otherwise assaulting vegetables to provide the requisite sounds for a horror flick. However, the more time Gilderoy spends in the studio, the more he is drawn into the world of the films on which he works. Some of the horror seems to stem from within, as Gilderoy revisits moments from his past, but it leaves him precariously poised between the real world and the imaginative realm represented by the films...