Ep. 15: The Classic Literature Club attempts to catch the Juumonji thief using Houtarou's skills.
Aired on July 30, 2012

The Classic Literature Club plans to catch the "Juumonji" thief by leveraging Houtarou's abilities to increase their visibility. Houtarou deduces that the thefts target clubs in alphabetical order and suspects the stolen items follow the same pattern. He then instructs the group to stop reading the kanji "十文字" as the surname "Juumonji." Instead, they should interpret it as "ten letters" or "juu moji." This new interpretation reveals a sequence that indicates the Classic Literature Club is likely the final target of the thief's activities. The group must now act quickly to prevent the theft from occurring within their own club.
Episodes
- Ep. 11 · Houtarou reevaluates the script after Satoshi and Eru critique the ending
- Ep. 12 · Classic Literature Club Members Lose Sleep Before Kan'ya Festival
- Ep. 13 · Satoshi competes in a quiz contest during the Kan'ya Festival while thefts occur.
- Ep. 14 · The Classic Literature Club enters a cooking contest while Mayaka handles Manga Research Club duties.
- Ep. 15 · The Classic Literature Club attempts to catch the Juumonji thief using Houtarou's skills.
- Ep. 16 · The Final Target involves the Light Music Club and a stolen manga
- Ep. 17 · Eru questions her actions as the Classics Club fails to protect the Hyouka manuscript from Juumoji.
- Ep. 18 · Houtarou investigates his teacher's survival of lightning strikes and helicopter concerns.
- Ep. 19 · Houtarou solves a fabricated mystery regarding counterfeit currency to prove his theoretical point.