In COLONIZATION Mulder's search for the truth suddenly seems near its end when he and Scully meet Cassandra Spender. A multiple abductee, Cassandra believes that aliens came to Earth on a mission that has somehow gone terribly wrong. Her theory is confirmed when Krycek reveals that three abduction sites were beacons for alien colonization and the death and destruction at those sites were caused by a small alien rebel force. Determined to prevent the colonization of Earth, this force is also eliminating all proof that an alien presence was ever on the planet. Unfortunately for Mulder, his quest for the truth has made him part of the proof which must be eliminated.
Patient X (season 5, episode 13), The Red and the Black (season 5, episode 14), The End (season 5, episode 20) and The Beginning (season 6, episode 2).
S.R. 819 (season 6, episode 2), Two Fathers (season 6, episode 12), One Son (season 6, episode 13) and Biogenesis (season 6, episode 23).
The Sixth Extinction (season 7, episode 1) The Sixth Extinction II: Amor Fati (season 7, episode 2) Sein Und Zeit (season 7, episode 10) and Closure (season 7, episode 11).
En Ami (season 7, episode 15), Requiem (season 7, episode 22), Within (season 8, episode 1) and Without (season 8, episode 2).
This information is not complete and will be completed when the information or time becomes available
Patient X Commentary by Kim Manners
The Red and the Black Commentary by Rob Bowman
Two Fathers Commentary by Kim Manners
One Son Commentary by Frank Spotnitz
Closure Commentary by Kim Manners
Within Commentary by Kim Manners and Robert Patrick