The Gatekeeper Boxed Set

From Author Wars - https://authorwars.com/publications/the-gatekeeper-boxed-set-81531.html

Overview:

Title: The Gatekeeper Boxed Set
Author: Christopher Golden, Nancy Holder
Year: 2001
ISBN-10: 0743430026
Publisher: Pocket Books (UK)
Price:
Pages: 1072
Binding: Hardcover
Type: Omnibus
Title Reference: Out of the Madhouse
Notes: Unknown