Skinner and Mulder in “Essence”

Skinner

Talk to you a minute?

Mulder

(follows him outside) You said there'd been a murder?

Skinner

Yeah, we'll get there. Some business we need to clear up. Personal business. About Scully's baby, about who the father is.

Mulder

(smiles) Ahh... Yeah, I hear there's a pool running down at the FBI, placing bets.

Skinner

I've had my suspicions. That is, until I found out that you had questions. Questions about Scully's pregnancy itself.

Mulder

You want to know who the father is, that's Scully's business. But if you're asking me how a woman who was diagnosed as barren and unable to conceive is about to give birth in a couple days, that's an answer I can't honestly give.

Skinner

Well, I need answers. In light of what we found in there and in light of Scully's due date I need good, hard answers. Fast.