Ep. 13: Locked Room Evil Spirit: The Unstoppable Murders
Aired on July 8, 2003

13
A spirit medium faces complex murder accusations when a second killing occurs, leading a police detective to blame Kaoru. Ryuu successfully proves her innocence but warns that the case remains difficult to resolve. The situation shifts when Kyuu suddenly announces he has solved the mystery and identified the culprit. This development complicates the investigation further, as the initial assumptions about the crime prove far more intricate than anyone expected. The narrative focuses on the tension between the accused, the defender, and the detective, highlighting the challenges of solving a crime that involves supernatural elements and unexpected twists in the locked room scenario.
Episodes
- Ep. 9 · Kyu uncovers a double-locked-room mystery while the class is trapped by a storm.
- Ep. 10 · The Beautiful Boy Genius Exposing the Perfect Mystery Room
- Ep. 11 · The Final Deciding Match! The Truth about Q Class!!
- Ep. 12 · A Curse Breaks Out!? The Séance Murder Case
- Ep. 13 · Locked Room Evil Spirit: The Unstoppable Murders
- Ep. 14 · Kyuu reveals the forbidden truth about the spirit medium Asakura being the brothers' mother.
- Ep. 15 · Class Q investigates a disappearance during their vacation at an underwater location
- Ep. 16 · Class A vows to defeat Class Q in exams while solving a murder diorama
- Ep. 17 · Class Q investigates mysterious murders in Kamikakushi Village