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Mulder receives information about a militant group that is collecting material to make a highly explosive weapon. An assault team breaks up the group and, during the raid, Mulder and Scully find Alex Krychek, who supplied Mulder covertly with the information on the group. With the traitor's help, the agents are able to obtain a diplomatic pouch containing a rock pulled from the ground in the Tunguska region of Russia.
Mulder: (to Krycek) You're an invertebrate scum sucker whose moral dipstick is about two inches short of bone dry.
Scully: What I'm worried about is you, Mulder. How far you'll go... and how far I can follow you.
Scully: You want this man brought to justice?
Krycek: You can't bring these men to justice. They're protected. The laws of this country protect them in the name of national security. They know no law.
Mulder: Then why don't you put a bullet in his head like you did that man out there?
Krycek: These men, they fear one thing; exposure. You expose *him,* you expose his crimes, you destroy the destroyer's ability to destroy.
Mulder: The only thing that will destroy this man is the truth.
Krycek: The truth, the truth! There's no truth. These men, they make it up as they go along. They're the engineers of the future. They're the real revolutionaries.