The The X-Files series by Hank Phillippi Ryan consists of 12 books, published between 1994 and 2024. The series begins with Goblins (By: Charles L. Grant).
Trust No One (By: Gayle Lynds,Heather Graham,Jonathan Maberry,Max Allan Collins,Kevin J. Anderson,Tim Lebbon,Keith R.A. DeCandido,Brian Keene,Peter Clines,Gini Koch)(2015)
The Truth Is Out There (By: Jonathan Maberry,Kelley Armstrong,David Farland,Rachel Caine,Hank Schwaeble,Kami Garcia,Jon McGoran,Hank Phillippi Ryan)(2016)