Lang’s masterpiece, a thrilling and complex crime drama that explores the horrors of crime and mob justice
Director: Fritz Lang
Cast: Peter Lorre (Hans Breckett), Gustaf Gründgens (Safecracker), Otto Wernicke (Inspector Lohmann), Ellen Widmann (Mother Beckmann), Inge Landgut (Elsie Beckmann), Theodor Loos (Inspector Groeber), Friedrich Gnaß (Franz, the burglar), Fritz Odemar (Cheater), Paul Kemp (Pickpocket), Theo Lingen (Conman), Rudolf Blümner (Beckert’s defender)

A murderer prowls Berlin’s streets. For weeks children have been murdered and the citizens are at fever pitch. The police are desperately trying every weapon in their investigative arsenal. The heightened police presence on the streets hampers the lives of regular criminals: they too decide to take matters into their own hands, pooling their resources to catch the killer. And the killer himself? Not a mastermind, but a peculiar, timid man (Peter Lorre), a slave to uncontrollable impulses.
All this forms Fritz Lang’s masterpiece, his first sound film and one of the greatest German films of all time. A rich, psychologically detailed procedural thriller it is a stunning indictment of mob violence, a detailed look at the flawed assumptions of the official forces and an unflinching look at the horrific personal impact of crime. Lang’s film is extraordinary, a brilliant mix of impressionistic insight and documentary realism covered in an all-revealing social tapestry. It’s gripping and extraordinary.
Lang’s film was heavily inspired by real-life cases, most notably Peter Kürten (“the Vampire of Dusseldorf”) and the structure of the Weimar police department. Just like the real Berlin, his fictional one has a criminal underworld governed by a sort of German mafia, the Ringvereine, who a bizarre social set of rules among criminals. M tied into debates around the death penalty: was it right to take a life, even for unspeakable crimes? Is a life in a psychiatric prison fair for the murderer of several children? M is fascinating as it provides enough ambiguity to support either side (Goebbels claimed, when watching it, that it was a sure sign that Lang would become “one of us”).
This stems from Lang’s superbly detailed, anthropological filming style, which throws the viewer into the centre of a world that feels extremely real. Streets are lined with beggars and an array of adverts, posters and political messages. The camera prowls down streets and over tenement blocks, catching shadows and gets lost in cigarette smoke. It captures every detail of the Berlin police department: forensic labs that breakdown fingerprints, annotated maps, criminal psychologists pontificating on the intellectual make-up of the killer based on his handwritten notes to newspapers. Detective Lohmann (an increasingly harried Otto Wernicke) puffs cigars, pulls together facts and fails to make any real progress, looking increasingly buffeted by events rather than controlling them.
It’s one of the film’s subtle criticisms of the political situation at its time. The official forces have every resource going, but seem powerless. Instead, Lang contrasts them ever more closely with the criminal underworld or use brute, uncontrolled, unordered force to tackle the problem. Is it my imagination, or is there the stench of Nazism in this group? Their nameless leader (Gustaf Gründgens) strides, with a leather-clad firmness, emotionlessly forward, fixated on the end result – despite, with at least three murders on his score card, arguably not being that different from the man he’s chasing killer. He instructs the criminals to effectively throw a dictatorial cordon around the city, their solution being stamping out freedom and taking unilateral action.
Lang’s film is sharply critical of the kneejerk horrors of this mob justice. Crowds are whipped up by press coverage (which they excitedly read, the papers hitting the streets with a special edition after every murder) into a mob desperate to lash out, crowding around posters offering rewards for catching the killer. A man giving the time to a child in the street is nearly lynched, a raised camera angle reducing him to a tiny figure compared to his aggressor towering over him. A group of people playing cards in a bar descend into blows after one accuses the other of behaving suspiciously. The criminal put together a show trial (with a token, powerless defence counsel) where the killer is allowed a few brief words before his pre-ordained lynching (no legality with Nazism).
Again, it’s hard not to consider the growth of street violence in Germany in 1931, an atmosphere where justice was slowly dying as the Nazi party argued people had the right to take violent action against those who they see as enemies of the state. The criminal organisation here are worryingly efficient and organised. Lang brilliantly intercuts between two meetings, both in smoke-filled rooms, as the police and the criminals plan their operations. Sentences started in one location are finished in another. Complementary camera angles echo each other. In the police meeting there are also calls for unilateral action. Lang criticises the authorities who are active but ineffective (and some sympathetic to the criminal’s viewpoint), as much as the brutal mob justice of the criminals.

And the killer himself? Brilliantly played by Peter Lorre (who resembles a perpetually frightened paedophilic toad), Hans Breckett is weak, feeble, as scared of himself as he is of others, unable to understand or control his urges. He is driven by a whistling tune of In the Hall of the Mountain King for Grieg (a whistling that he sometimes produces, at others seems to hear around him) and consumes the things he desires – be they apples, drinks or children – with an impulsive immediacy. His letters to the papers suggest he is desperate to be seen. But when he is, chased by the crowds, he’s weak, terrified and utterly unimposing, trembling amongst the flotsam of a factory almost indistinguishable from the debris around him. At his trial he attempts to vindicate himself with a whining desperation. But, as Lang quietly suggests, do we have the right to kill him?
After all, Breckett is almost certainly a war veteran. He shares that with several other characters – as we are reminded by beggars with wooden limbs. Maybe his split personality – perhaps that’s why he stares with curiosity at his own face in the mirror, as if he doesn’t recognise himself – is a relic of a conflict where men were encouraged to kill, then returned back into society where expected to do the opposite. Perhaps the same feelings also lie behind the ease so many people have with mob justice – and also those in the criminal jury who show some sympathy for Breckett’s forbidden urges.
As well as balancing these complex ideas, Lang’s film is also a masterpiece of visual and aural technique. A child’s death is suggested by a newly orphaned ball rolling into frame. A gorgeous hand-held camera shot wanders through the beggar’s bar, where beggars gather used cigars, rescued sandwich fillings and sign up to be the criminal’s eyes on the street. Sound transitions between scenes are handled with an extraordinary confidence. The silence of armies of policeman walking through the streets turning into burst of noise as they move through raids. The Grieg leitmotif is used to brilliant effect.
Lang’s film though never forgets the victims. we start and end with the parents. The mother of the film’s first victim, Elsie Beckmann, waits with increasing panic in her apartment, each knock of the door promising her daughter’s return but disappointing (we’ve already seen Elsie disappear, hand-in-hand, with Breckett’s whistling shadow). It’s to her the film returns to her at the end, her tear-stained face telling us no sentence will bring back the dead. Appearing over a wordless scene of Beckett’s actual trial (the result of which we never discover), its Lang’s subtle reminder that mob justice brings only false satisfaction, that killing never heals the wounds of loss and our effort would be better directed to protection rather than revenge. It’s a message that feels particularly poignant in a German film made in the final years before Nazism would lead the country into devastation.
Filled with stunning film-making confidence, mixing documentary realism and brilliantly confident visual and audio mastery, Lang’s M could be argued to be one of the greatest film noir detective dramas ever made – and also a brilliantly insightful look at human and social nature. M is a masterpiece, as gripping and relevant today as it was Lang filmed it.








