Mulder: Is Agent Krycek asserting that I killed him too?
Skinner: No. He corroborates your story. But the fact is, we've got a dead suspect, Agent Mulder, and no other plausible cause of death. O.P.C. wants the both of you to take a lie detector test. You're to report there immediately.
Mulder: There is another plausible cause of death.
Skinner: Which is?
Mulder: Poisoning by injection or ingestion.
Mulder: You won't find that on the navy pathologist's report.
Skinner: What are you saying, Agent Mulder?
Mulder: That the autopsy is incomplete. That the military covered up the toxicological findings.
Skinner: And why would they do that?
Mulder: Because they know where Scully is.