"Final Events: and the Secret Government Group on Demonic UFOs and the Afterlife" came out about four months ago. Written by Nick Redfern (click here for Nick's website) it was published 2010 by Anomalist Books, San Antonio, TX. ISBN 1933665483.
Some of the persons interviewed for the book were Guy Malone,and his partner Nicole (click here); Joe Jordan (click here) ; Dr Michael S Heiser (click here,) and UFO researcher and Minister, Ray Boeche.
The premise is that there was a secret project, within the US Department of Defence, originating in the 1950's. This Project is said to have looked at a variety of things, but included contact with entities which were shown to be demonic and not extraterrestrials.