HPI International (Halo Paranormal Investigations) sets out for the unknown. Their cases are recognized by Travel Channel's Ghost Bait and Travel Channel's Ghos

The paranormal adventures don't stop! Take a peek inside this book and watch the James Bond of the Paranormal take on UFOs, ghosts, poltergeists and demons! Wat

Follow the adventures of HPI (Hegelianism Paranormal Intelligence) as we investigate all things paranormal in Northern California and even internationally.

Paul Dale Roberts, HPI's Esoteric Detective takes you on another journey of paranormal investigations. His elite team seeks out the mysteries of the universe to

Jedes Jahr lädt das Hasso-Plattner-Institut (HPI) Gäste aus der Industrie und der Wissenschaft zu einem kooperativen und wissenschaftlichen Symposium zum Them