First post, first rec, X-Files Crossover!
One of my old favourites by Joann Humby, is a crossover with Dirty Harry
called Letting Go
, and its a investigation fic that takes place pre-xfiles.
Joann's summary for the story:SUMMARY: Unlikely as it might sound this a X-Files / Dirty Harry crossover. My excuse for this was I wanted Mulder to have to work with a nice/honest/talented/straightforward cop. Then I watched a Dirty Harry film straight after an X-Files episode and the rest happened by accident.
And you can see the story here:Letting Go
by Joann Humby.http://www.foxsyd.net/acacia/texts/humby-lettinggo.txt