Mephistopheles Den by Matthew Vaughn
It's another small town haunted house, and that means another outing for The Harrington family.
Mephistopheles Den is open for one night only, Halloween. Everybody in town is going, including two groups of friends who cross paths at the haunted house. Ten people will be going in, but how many will come out? Zed and his brother Pete haven't finished decorating their haunted house yet, they still need a few more corpses to get it just right.
Mephistopheles Den is a dark and extreme story set a few years before the events of Hellsworld Hotel, but can be read as a stand alone story.