Recap: The X Files S 04 E 08 Tunguska
- Idiot Ball: A good part of the plot for this arc depends on a customs official being stupid enough not only to open a bomb-shaped container but also, after he's warned the thing's a biohazard, to remove the contents and drop them.
- The Mole: Krycek turns out to be working with the guards at the Gulag in Tunguska.
- Myth Arc
- Retired Monster: Vassily Peskow is forced out of retirement to destroy everything connected with the Black oil and its vaccine.
- The Tunguska Event