The Restless Dead — Gail Z. Martin

Set in modern-day Charleston. A deserted shopping mall, unquiet spirits and a long-forgotten tragedy become tools for terror when a deranged young man trades his soul for a chance for vengeance.

This adventure takes place between Buttons and The Final Death. Adventures 7 and 8.
This series of adventures spans over 500 years, from the 1500s to modern day as a small cabal of vampires and their human helpers battle supernatural enemies to find and destroy dangerous magical items and keep the world safe from dark forces.