Fritz Arno Wagner
None (Grieg, whistled)
Germany
Fritz Lang
99 min
The first serial killer film, and still the most uncomfortable, because Lang forces you to feel sympathy for the monster right before the mob tears him apart.
M
Opening Shot
Children in a courtyard sing a counting rhyme about a murderer who will come for them. A mother calls from a window for her daughter, Elsie. Fritz Arno Wagner's camera follows the empty spaces where the child should be: the stairwell, the dinner table, the vacant lot. A balloon, bought for Elsie by a stranger, drifts into power lines and catches. The absence becomes a presence. Lang tells you the child is dead without showing you a thing.
What It Does
Wagner's cinematography bridges German Expressionism and the realist cinema that would follow. The shadows and angular compositions of the Expressionist tradition are present, but the street scenes are shot with a documentarian's attention to the texture of Weimar Berlin: the newspaper kiosks, the crowded bars, the police offices piled with paperwork. The city is a machine, and Lang photographs its components with the same fascination whether they're cops, criminals, or bystanders.
The film's most radical sonic element is the absence of a conventional score. Hans Beckert (Peter Lorre) whistles a passage from Grieg's "In the Hall of the Mountain King" as his signature tell, and the whistling becomes the film's most terrifying sound cue. Lang was working in the early years of sound cinema and understood something most of his contemporaries missed: silence is a tool, and a single whistled melody can carry more threat than a full orchestra.
Lorre's performance is the reason this film endures. He plays Beckert's final speech (before a kangaroo court of criminals) as a man genuinely terrified by his own compulsions. His eyes bulge. His voice cracks. He begs the mob to understand that he can't stop himself. Lorre makes you feel pity for a child murderer, and in that pity is Lang's trap: the mob that wants to kill Beckert is morally indistinguishable from the system that failed to stop him. Everyone wants blood. Nobody wants responsibility.
Why It's on the List
M invented the procedural thriller, the serial killer film, and the vigilante justice narrative in a single 99-minute package. Lang's decision to make the criminals more effective than the police was a political observation disguised as genre mechanics. The underground tribunal scene, where thieves and murderers judge a child killer, is the most incisive courtroom sequence in cinema: who has the moral authority to judge when every institution has failed? Lang asked that question in 1931. Germany would answer it, catastrophically, two years later.
The Argument Against
The early sound-era production values are visible: some scenes are statically staged, and the audio quality varies. The parallel editing between the police investigation and the criminal underworld, while structurally innovative, can feel mechanical in its alternation. And the film's moral argument, while sophisticated, occasionally relies on the criminals being more sympathetically drawn than they should be, which can read as Lang weighting the scales rather than presenting the dilemma honestly.
Closing Image
The mothers sit in court. The verdict is not shown. A mother says: "We must keep closer watch over our children." The screen goes black. Lang ends with the people who have no power, offering a solution that is no solution. The system will fail again. The mother knows it. She said it anyway.