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85 minutes exactly — the "classic feature" runtime most directors aim for.

A train with all the passengers disappears in the subway. Sometimes the sound of a passing train can be heard in the tunnels, but no one sees it. A young mathematician develops a theory: because of the opening of a new line, the train has fallen into another dimension.
“Some stories are better left unspoiled.”

Diether Krebs
Wuttke

Corinna Kirchhoff
Nadja

Hans Peter Korff
Simon

Günter Lamprecht
Arnold

Jörg Gudzuhn
Cross

Wolf-Dietrich Berg

Tom Pauls
Peter Aust
Credits
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Cinephile deep dive
Matti Geschonneck directs. Michael Epp behind the camera. Ulrich Gumpert scores. Marlies Dux cuts. Runs lean at under 100 minutes. Produced in Germany. Dialogue in German.
Trivia
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Production companies
Deutscher Fernsehfunk
DE
Ottokar Runze Filmproduktion
DE
Themes & keywords
Release history · US
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