Major spoilers for File 1117. Kantetsu died of starvation after being confined, Kogoro Mouri has been abducted, and Conan and Heiji identify the central locked-room clues.
The Kannon statue, the black dirt on the detectives’ socks, the missing charm, and the drifting fireballs all matter, but the culprit and complete mechanism are not yet confirmed in this chapter.
This article separates the file’s evidence from theories about the statue, the will-o’-the-wisp trick, and Heiji and Kazuha.
File 1117 is titled “The Mystery of the Chastisement Room.”
Detective Conan 1117 “The Mystery of the Chastisement Room” – Spoiler
The chapter opens with the shocking discovery of the missing monk Kantetsu—his body sprawled inside the temple’s infamous sekkan-beya (penalty chamber).
Conan and Heiji quickly examine the corpse and confirm the monk is long dead.
Inside the room are Conan, Heiji, Ran, Kazuha, and the three resident clerics—head priest Tesshin Oshō, plus junior monks Kentetsu and Tontetsu.
Notably, Kogoro is nowhere to be seen…
File 1117 Spoiler ① The Monk Died of Starvation
Conan and Heiji’s examination indicates that Kantetsu was confined somewhere for around four days and died of starvation. The five-day disappearance described earlier is a separate interval; this examination does not identify where he was held.
Searching the penalty room, Heiji finds his missing protective charm on the floor.
Outside the chamber, an out-of-place cleaning bucket sits on the steps—Heiji accidentally knocks it over, spilling water.
Conan also finds a few odd wood chips on the floor…
Meanwhile, Kogoro is shown elsewhere—trussed up with rope and duct tape, held captive.
File 1117 Spoiler ② The Legend of the Crimson Skull
Conan asks the monks to recount the discovery of the Guren Dokuro (“Crimson Skull”) one month ago.
They explain that at dusk they saw ghostly “will-o’-the-wisps” climbing the stone steps; at the top lay a charred corpse—later identified as Buddhist-art scholar Jun Murata.
Murata had previously insulted the temple’s Kannon statue, carved by famed Kamakura sculptor Dokei, snarling that it was “unfit for worship.” (unofficial translation)
He had also requested a private talk with the head priest before his death.
File 1117 Spoiler ③ Kogoro Attempts a Silent SOS
Bound hand and foot, Kogoro manages to fish out his phone.
He snaps a photo of his surroundings with his toes, hoping to e-mail a clue to somebody on the outside.
File 1117 Spoiler ④ The Temple’s Mysterious Statue
The Kannon icon has been handed down through generations.
Every night it is locked inside a secure vault—normally by all four monks (including the late Kantetsu) taking turns.
File 1117 Spoiler ⑤ Conan & Heiji Connect the Dots
Re-examining the facts:
Heiji’s omamori was lying in the penalty room.
Both detectives’ socks were stained black after climbing the stairs.
Just then, Conan receives the clandestine photo e-mailed by Kogoro.
Sharing a knowing glance, Conan and Heiji realize they’ve cracked the locked-room trick.
While Ran and Kazuha worry about Kogoro, Heiji asks Kazuha whether she has a tablet. His expression makes her think he has solved the mysteries.
Kazuha: “Heiji’s eyes were sparkling—that’s the face I love most, when every mystery clicks!” (unofficial translation)
Detective Conan 1117 “The Mystery of the Chastisement Room” – Review & Theories
As suspected, this chapter confirms that Kogoro is being held captive.
Where exactly is he confined? How was the trick carried out? Let’s unpack the biggest questions and my personal takeaways.
File 1117 Review & Theories ① – The Hidden Secret of the Temple Statue
A focal clue is clearly the Buddhist image.
The abbot casually remarks, “We’ll only be locking it away until the end of this week!” (unofficial translation)—a suspicious line that hints the statue may soon be spirited off or even sold.
It could also be a forgery.
Anyone who realized that fact—Kantetsu or Murata—may have been silenced to protect the scheme. Expect the statue to sit at the center of the solution.
File 1117 Review & Theories ② – The Will-o’-the-Wisp Trick Matters
Those ghostly “fireballs” that crept up the stairs to the penalty chamber are crucial.
After following the trail, Conan and Heiji found black dirt on their socks. It may have come from something burned, but the material and mechanism remain unclear in File 1117.
One possibility is that something was burned to create the fireball effect; File 1117 does not confirm this theory.
Heiji’s missing omamori charm, later found in the chamber, may have served as a stopper in the mechanism, but that role is not confirmed in File 1117.
I’m eager to see how Gosho ties the physics together!
File 1117 Review & Theories ③ – Will Heiji Finally Confess?
Heiji keeps bringing up that sunset view from Mount Washio’s summit—the perfect backdrop for a love confession.
Kazuha, for her part, gushes:
Kazuha: “Heiji’s eyes were sparkling—that’s the face I love most, when every mystery clicks!” (unofficial translation)
At the File 1117 boundary, Heiji’s interest in the sunset and Kazuha’s affection suggested that he might confess in File 1118. It was a prediction, not an outcome established here.
Fingers crossed!
Further reading (contains spoilers): Heiji and Kazuha's relationship timeline.
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