The X-Files (1993)

Christmas Carol (1) - S5-E6

Plot hole: On the phone, Scully asks for the report on her sister to be sent to the San Diego F.B.I field office (since she is visiting her brother and his wife and so is not in Washington), but the package is sent to her brother's home. Even if 'Danny,' whom she asks for the file, decided to be helpful and send it directly to her, her brother's address is not likely to be the one in her personal file, plus she didn't mention that that's where she'd be staying.

Purple_Girl

All Souls - S5-E17

Plot hole: It is quite incomprehensible that only Mulder drew Scully's attention to the inverted cross. As a Catholic and experienced investigator Scully would know the significance of this symbol and would pay attention to such crucial detail. (00:16:30)

Chop Luftmysza

The End - S5-E20

Plot hole: Mulder asks Spender to rewind the tape to the crucial moment on the video, however he could not have seen that moment, because he entered the meeting too late to watch it. (00:08:40)

Chop Luftmysza