Ghost Passenger Ship Murder Case: File 2 - S2-E6
Character mistake: During Wakaouji's flashback, if he really picked the picture from his breast pocket the way it is depicted, then the picture he showed to the captain was upside down. Would be kinda hilarious, but I don't think that is what the animators were going for. (00:16:35)
Magical Express Murder Case: File 1 - S2-E10
Character mistake: When the boss of the magical troupe greets the passengers, the clock behind him shows it's 9:40. Noble later complains that he's gone for over an hour, but when he performs the stripping trick on Miyuki, the clock shows it's a couple minutes past 10, so not even half an hour passed. (00:07:40)
Magical Express Murder Case: File 3 - S2-E12
Character mistake: In Akechi's flashback, the board with the flight for Los Angeles has accurate names of airline companies (they seem to have swapped "Virgin" with "Kristen", for some reason) but the flights for Seoul is from "KSREAN" Air, clear misspelling of "Korean." (00:14:15)