Magical Express Murder Case: File 4 - S2-E13
Continuity mistake: During the denouement, they show one of the bags being carried away from the train; the size is completely incoherent with the one shown earlier. (00:07:25)
Magical Express Murder Case: File 4 - S2-E13
Factual error: The Puppeteer from Hell in flashback is training in Italy, but the magazine they give him with the news opens Japanese-style. (00:13:35)
Magical Express Murder Case: File 4 - S2-E13
Plot hole: The ending twist is nonsensical; the disciples have been using the tricks in Reiko Chikamiya's notebook for over 5 years, so the 'trap' inside the notebook could, and should, have happened at any point during that time. There's nothing in the killer's actions that makes that particular magic trick happen, nor he swapped or manipulated it.
