From the introduction:
Welcome to The Sting of Death, a midlevel supernatural M&M Superlink adventure. This is a supernatural adventure, with a strong element of horror, but it doesn't contain anything too gross or bloody for a four-color campaign. The adventure may involve creepy cults and a spooky castle in Transylvania, but it's relatively straightforward and light in tone, without a lot of tortured moral ambiguity or dark and disturbing plot-twists. The setting conjures an atmosphere of dread (at least if we’ve done our jobs right), but the story itself is a simple tale of overcoming evil and banishing darkness. While it is distinctly arcane in flavor, and might particularly appeal to PC magicians and occult investigators, there is no reason why a group of traditional superheroes couldn't run through this adventure just as well. They won't even need to have a sorcerer on the team.