History Main / LockedRoomMystery

6th Feb '16 1:41:22 PM TheOneWhoTropes
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* Commonplace in ''Manga/TanteiGakuenQ''.
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* Commonplace in ''Manga/TanteiGakuenQ''.''Manga/DetectiveSchoolQ''.
4th Feb '16 5:46:06 PM Twiddler
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* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room is sealed shut when the main character arrives; the barrier goes up shortly after he opens the door, and he then enters to find the room empty and the activation key already in place.
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* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room is sealed shut when the main character arrives; at first; the barrier goes up shortly after he opens the door, seal is broken by the main character, and he then enters to find the room empty and the activation key already in place.
4th Feb '16 5:43:54 PM Twiddler
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* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room is sealed shut before the main character arrives; the barrier goes up shortly after he opens the door, and he then enters to find the activation key already in place.
to:
* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room is sealed shut before when the main character arrives; the barrier goes up shortly after he opens the door, and he then enters to find the room empty and the activation key already in place.
4th Feb '16 5:42:22 PM Twiddler
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* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room was sealed shut until main character Adlet arrived; the barrier goes up shortly after he opens the door, and he then enters to find the activation key already in place.
to:
* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room was is sealed shut until before the main character Adlet arrived; arrives; the barrier goes up shortly after he opens the door, and he then enters to find the activation key already in place.
4th Feb '16 5:41:33 PM Twiddler
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Added DiffLines:
* In ''LightNovel/RokkaNoYuusha'', the main cast is within a forest when [[ClosedCircle they become trapped there by a magical barrier covering the area.]] The door to the activation room was sealed shut until main character Adlet arrived; the barrier goes up shortly after he opens the door, and he then enters to find the activation key already in place.
21st Jan '16 10:22:11 AM CaptainCrawdad
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* ''Series/TheNo1LadiesDetectiveAgency'' has an episode dealing with one that lampshades how it's just like a mystery novel plot.
12th Jan '16 1:32:52 PM CassandraLeo
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* ''Film/TheHatefulEight'' effectively becomes this after it's revealed that someone in the haberdashery is in on the plot to free [[TheSociopath Daisy]]. The room isn't ''technically'' locked, but the door is in such shape that no one can enter or leave the room without everyone else in the building knowing it.
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* ''Film/TheHatefulEight'' effectively becomes this after it's revealed that someone [[spoiler:someone in the haberdashery is in on the plot to free [[TheSociopath Daisy]].Daisy]]]], and even more so after [[spoiler:the coffee is poisoned]]. The room isn't ''technically'' locked, but the door is in such shape that no one can enter or leave the room without everyone else in the building knowing it.
12th Jan '16 1:32:03 PM CassandraLeo
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to:
* ''Film/TheHatefulEight'' effectively becomes this after it's revealed that someone in the haberdashery is in on the plot to free [[TheSociopath Daisy]]. The room isn't ''technically'' locked, but the door is in such shape that no one can enter or leave the room without everyone else in the building knowing it.
1st Nov '15 1:04:28 PM FF32
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* One of the Detective Cilan episodes of ''{{Anime/Pokemon}}''. Despite the door being locked and the outside being guarded by a Watchog, and the jewel under lock and key, the power goes off and the Liepard's Eye is stolen. Several clues point to {{Red Herring}}s, but Cilan eventually covers the truth: the man Ash battled in the tournament earlier in the episode purposely used an Electric type in their match to short circuit the power to cause a distraction, and had his [[ChekovsGunman Vanillite]] sneak into the room through a vent, make a key out of ice, and steal the jewel. The perp's role in the tournament would also serve as an alibi, since he'd be too busy battling Ash to steal the gem.
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* One of the Detective Cilan episodes of ''{{Anime/Pokemon}}''. Despite the door being locked and the outside being guarded by a Watchog, and the jewel under lock and key, the power goes off and the Liepard's Eye is stolen. Several clues point to {{Red Herring}}s, but Cilan eventually covers the truth: the man Ash battled in the tournament earlier in the episode purposely used an Electric type in their match to short circuit the power to cause a distraction, and had his [[ChekovsGunman [[ChekhovsGunman Vanillite]] sneak into the room through a vent, make a key out of ice, and steal the jewel. The perp's role in the tournament would also serve as an alibi, since he'd be too busy battling Ash to steal the gem.
18th Oct '15 10:14:19 PM TARINunit9
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* Inverted in ''LawAbidingCitizen'', in that Clyde is somehow pulling off elaborate murders while locked in solitary confinement.
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* Inverted in ''LawAbidingCitizen'', in that Clyde is somehow pulling off elaborate murders while locked in solitary confinement. [[spoiler:He had an escape tunnel.]]

* D.I. Richard Poole faces one of these in the very first episode of ''Series/DeathInParadise''.
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* D.I. Richard Poole faces one of these in the very first episode of ''Series/DeathInParadise''. The solution was that it was [[spoiler:technically a subversion: [[RealityEnsues the victim didn't die until after the room was unlocked]], and the witness was lieing because she was the killer.]]
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