Timber by Nevdull

Nevdull doesn't give too much away with her summary, so I went into this one not knowing what to expect, which was good, because had I noticed it was to do with Season 7 Mytharc I may not have read it at all... I'm often very prejudicial in that way.

This is a truly unique and fascinating treatment of the mytharc we were lumped with in S7.  Krycek and Marita get a look in (plus some backstory), joining Mulder and Scully in a determination to get to the bottom of the information found on the alien ship and save humanity. Instead of Mulder claiming to have found the key to everything and Scully rolling her eyes, this Mulder and Scully just do what needs to be done.