From the file's introduction
There are those who hold that whatever evil you do eventually comes back to you, in either this life or the next. And when your crime is particularly heinous, retribution can take highly unusual forms—perhaps even supernatural ones.
TEAM BRAVO: Flames of Wrath is an adventure set in the modern day, but it includes fantastic elements such as undead creatures with supernatural powers.
A Short Adventure for Four 4th-Level Heroes