Gilderoy makes his living replicating reality, using technical ingenuity to evoke footfalls, rustling leaves and clattering vehicles as an expert sound designer. After accepting a new job on an Italian giallo – or horror-thriller – film in need of blood-curdling screams and stomach-churning crunches, he finds himself becoming dangerously immersed in the project. The boundaries separating fiction and reality soon become treacherously leaky in Peter Strickland’s deliciously lurid black comedy.