Dungeons & Dragons: Total Party Killers #1

The wizard Custos has died, and his lair lies ripe for the taking! As adventurers raid the lair for treasure, the monsters enthralled by Custos in life must protect his domain even after his death. That is, unless the creatures can trick someone into releasing them! Thus, a lycanthrope, gelatinous cube, mind flayer, death knight, and baby beholder form their own adventuring party to win their freedom in a hostile world!