M is a pioneering early sound film, a thriller and police procedural that offers a meticulous and precise exploration of the different levels of society (from the police to the underworld). The greatest of Fritz Lang's films, it is a crystalline masterpiece of editing, with a haunting performance by Peter Lorre as a childlike serial killer and the most morally complex manhunt in cinema. This extraordinary restoration is presented courtesy the Deutsche Kinemathek (Berlin) and Praesans Films (Zürich). Subtitles available.