Final Events and the Secret Government Group on Demonic UFOs and the Afterlife (Anomalist Books, 2010) but cannot wait to do so. I've heard Nick discuss the book on various interviews; the book's subject matter is something I am very much interested in and it's at the top of my list of "next to read" material.
Mike at UFO Religions did read the book, and wrote a review at his blog. Nick left a comment over there. So, enjoy!