Opera House Murder Case: File 2 - S1-E22
Other mistake: At the beginning of the episode, the characters are gathered thinking back about part 1 of the case. Amazingly enough, the propmaster's armpit ate the A of his shirt. Now he's not a "BADMAN", he's a "BADMN." (00:02:05)
Opera House Murder Case: File 2 - S1-E22
Continuity mistake: There's a blatant coloring error regarding Kindaichi's clothes when he speaks to the inn's manager through the window; his shirt goes from orange to lilac, with a pea green undershirt. (00:09:05)