- HD 1080
- Runtime: 80m.
- Status: Released
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- Languages: sv
- Country: Sweden
- Director: Ingmar Bergman
- Stars: Doris Svedlund, Birger Malmsten, Eva Henning, Hasse Ekman, Stig Olin
- keywords: suicide, film in film, religion, prostitution, devil, abusive boyfriend
- Production_studio: Terrafilm
- The Prison is featured in the top rankings of 1949
- #15 in Top Drama Movies of 1949
A movie director is approached by his old math teacher with a great movie idea: the Devil declares that the Earth is hell. The director rejects the idea, but subsequent events in the life of a writer, a friend of the director's, and a young prostitute he loves seem to prove the math teacher's idea.