From the back cover:
CTHULHU CALLS
At long last, the intricacies of the Cthulhu Cult are revealed!
Cults of Cthulhu guides you in the creation of complex and believable antagonists for your scenarios and campaigns—villains who are more than just faceless minions and who embody the most terrifying threat of the Cthulhu Mythos.
Inside, you’ll find:
A history of Cthulhu cults, from the Victorian era to the Modern-Day.
Five Cthulhu cults, ready to be incorporated into your games.
Detailed guidance on designing cults and their leaders, including a special “Cults Worksheet”
Profiles for a range of cultists, new monsters, new artifacts, and new spells.
Three scenarios concerning Cthulhu cults, spanning Gaslight Victorian, Modern-Day, and the signature 1920s setting.
Cults of Cthulhu delves into the human side of the dark and horrific world of those who worship the dead yet dreaming abomination known as Great Cthulhu.
FOR MATURE READERS
This book deals with mature themes and is intended for mature players.