Delta Green: The Rules of Engagement (Call of Cthulhu Mythos fiction)

Delta Green: The Rules of Engagement is the first Delta Green novel, following the release of the short story collection Delta Green: Alien Intelligence. Delta Green weaves the comic terrors of the Cthulhu Mythos seamlessly with the paranoia and shadowy forces of conspiracy theory, updating the stories of jazz era horror writer H. P. Lovecraft to the modern day.