My special guest tonight is Mark Keyes, who's here to discuss his book about a terrifying poltergeist that went on for years.  Get his book The Upper Darby Poltergeist: A PPA Investigation on Amazon.    The spellbinding true story of an American family of seven tormented by poltergeist activity beyond imagination.  In 2010, The Pennsylvania Paranormal Association (PPA) was requested to investigate claims of a severe haunting in Upper Darby, PA. Reports of encounters by the family far exceeded those of typical ghostly activity. Following an initial interview, investigators had some skepticism regarding the frequency and magnitude of the activity, as reported. They were wrong!  This true story chronicles events during a comprehensive paranormal investigation spanning more than two years, with four different visits to a suburban home just outside the City of Philadelphia. What was uncovered through the investigation were angry ghosts, occult spells, entity attachments, and an incredible amount of poltergeist activity.  Readers will learn of the successes and failures of The PPA as the investigation continued and hear about some of the struggles that this family of seven endured for so long.  Mark Allan Keyes, a retired State Police Detective, works as a private investigator. He is a speaker and instructor on paranormal investigation and, as a parapsychologist, has been involved in over 200 resolution cases. Keyes is an expert commentator on Travel Channel's Haunted Hospitals and Paranormal 911. Numerous PPA investigations have been highlighted on Travel Channel's Paranormal Survivor and Destination America's The Haunted. The author may be contacted through: www.theppa.net    Follow us on Instagram Follow us on Facebook It's super easy to access our archives! Here's how: iPhone Users: Access Mysterious Radio from  Apple Podcasts and become a subscriber there, or if you want access to even more exclusive content, join us on Patreon. Android Users: Enjoy over 800 exclusive member-only posts to include ad-free episodes, case files, and more when you join us on Patreon.  Please copy and Paste our link in a text message to all your family members and friends! We'll love you forever! (Check out Mysterious Radio!)Do you frequently miss episodes of Mysterious Radio? Don't worry; here are some tips to ensure you never miss out again:1. If you haven't already, follow or subscribe to the show to receive updates on new episodes. Even if you have already done this, it's a good idea to click the option again to ensure that you are still subscribed. This is especially important!2. Turn on notifications for new episodes in your podcast app.3. Make sure that your device allows notifications from your podcast app.4. If your app has the option, swipe down to refresh the list of episodes. Do you frequently miss episodes of Mysterious Radio? Don't worry; here are some tips to ensure you never miss out again:1. If you haven't already, follow or subscribe to the show to receive updates on new episodes. Even if you have already done this, it's a good idea to click the option again to ensure that you are still subscribed. This is especially important!2. Turn on notifications for new episodes in your podcast app.3. Make sure that your device allows notifi