8 books in series

The X-Files

The X-Files is a 8-book series with 8 primary works first released in 1994 with contributions by Charles L. Grant, Kevin J. Anderson, Ben Mezrich, Elizabeth Hand, Chris Carter, and Max Allan Collins.

The X-Files: Goblins
Whirlwind
Ground Zero
Ruins
Antibodies
Skin
The X-Files: Fight the Future
The X-Files