An immaculate digital restoration job, including muffle-free audio, silky silver monochrome and original 'pillarbox' framing, adds an unnerving contemporary kick to Fritz Lang's 1931 masterpiece. Detailing the slavering hunt for bug-eyed child murderer Hans Beckert (Peter Lorre) through a dark and hostile, shadow-filled Berlin, this is the original, if not the best, serial killer flick.