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Guimoon: The Lightless Door 귀문

About

Guimoon: The Lightless Door (Korean: 귀문) is a 2021 South Korean horror film, directed by Sim Deok-Geun and starring Kim Kang-woo, Kim So-hye and Lee Jung-hyung. The film is simultaneously produced in 2D, ScreenX and 4DX versions. This is a first time in any Korean film that audience can feel the horror of the characters with screens extended to both walls, and 4DX equipped with motion chairs and special environmental equipment. The film depicts the story of the director of a psychic research institute and college students.

Description via Wikipedia (lead extract) · name cross-verified Wikidata + Wikipedia.

Verified facts

Guimoon: The Lightless Door (귀문) — verified Korean film. Released 2021-08. 2 verified cast.

Details

• Genre: horror film
• Original language: Korean
• Title: Guimoon: The Lightless Door
• Korean Title: 귀문
• Year: 2021
• Country: South Korean
• Director: Sim Deok-Geun
• Released: 2021

Source reconciliation

• Wikipedia lists the Korean name as 귀문 (영화); KoreaAPI uses 귀문 (chosen by source authority).

Independent sources disagreed here — shown, not hidden.

Cast (2)

• Kim Kang-woo
• Kim So-hye

Q&A — what agents ask

Cross-checked by 3 source(s)

• Wikidata — structured open knowledge base · view ↗
• Wikipedia — encyclopedic article · view ↗
• TMDB — film/TV community database

Verification history

Verified & tracked since 2026-08-17 · 4 verified snapshots.

Append-only, timestamped — the record of WHEN a fact changed, which a latecomer cannot backfill. Full feed: /changes.json · machine-readable: get_history("film:guimoonthelightlessdoor").

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