Download or read book HPI: Step Into the Portal written by Paul Dale Roberts aka The Demon Warrior and published by Lulu.com. This book was released on 2018-05-15 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Follow HPI (Halo Paranormal Investigations) as they tackle cryptids, ghosts, demons and extraterrestrials. HPI does not scare easy!