Familiar

The X-Files 11×8

The Truth Is Out There

Mulder: Because there were bogus witch hunts doesn't mean that there were no witches.

Scully: What's not to like? I mean, you couldn't dream up a more perfect suspect. He's potentially John Wayne Gacy with a monkey.
Mulder: That's it. It's too perfect. I don't, I don't like perfect like that. Makes me uncomfortable.

Mulder: In the 16th and 17th century, witches were said to conjure spirits called familiars, which usually took the form of-of animals. But sometimes could take human shape in the guise... of the victims' ardent desires or a beautiful woman luring a man to his death, or... a TV character.

Scully: That woman went up in flames.
Mulder: Maybe it was the candles.
Scully: Maybe it was the gates of hell.

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+ Quotes on the IMDb