I believe Cassandra Spender's abduction is a pure, classic X-Files moment. The visuals in the scene where fantastic. Scully's hypnotic regression scene has to be my favorite moment in the entire season, its just pure "X-Files" greatness. Laurie Holdie is red hot as Marita Covarrubias, she and Krycek share the best kiss in the entire series. Brian Thompson is back for a little while as the awesome Alien Bounty Hunter. Veronica Cartwright gave a great performance in the first part of this two-parter. She is really good. When the episode ends you are left asking for more. These are great mythology episodes, that you should not skip.
Review of The Red and the Black
