written by Charles Grant Craig
SCULLY: Well, that's spooky.
MULDER: That's my name, isn't it?
SCULLY: I hate to say this, Mulder, but I think you just ran out of credibility.
SCULLY: You don't see what you're doing, do you, Mulder? You are so close to this that you just don't see it.
MULDER: What don't I see?
SCULLY: The extreme rationalization that's going on. Your personal identification with the victim, or in this case, the suspect. You're becoming an empath yourself, Mulder. You are so sympathetic to Lucy as a victim like your sister that you can't see her as a person who's capable of committing this crime.
MULDER: You don't think I've thought of that? I have. And not everything I do, say, think, and feel goes back to my sister. You, of all people should realize that sometimes motivations for behavior can be more complex and mysterious than tracing them back to one single childhood experience.