Biography

Dr. Bill Slevin is a world-famous paranormal investigator, demonologist, parapsychologist, researcher, educator, and author with more than 36 years of experience exploring the mysteries of the unknown. His life's work has been devoted to uncovering the truth behind hauntings, demonic cases, and unexplained phenomena-while bringing hope, guidance, and protection to those tormented by forces they cannot understand.

From an early age, Bill was drawn into the world of the paranormal, experiencing unexplained encounters that ignited a lifelong pursuit of answers. Over the decades, his journey evolved into a professional calling-combining his Ph.D. in Parapsychology and Metaphysical Humanistic Science, extensive fieldwork, and thousands of hours of research and investigation. His expertise has made him one of the most respected and sought-after voices in the field today.

Bill has conducted well over 1,000 residential investigations worldwide, specializing in hauntings and dark and demonic cases, where he is frequently called upon by churches, clergy, and other investigative teams to assess and confront malevolent activity. He is not only a trusted authority in demonology but also a mentor and educator, dedicated to preparing the next generation of investigators to approach the field with knowledge, compassion, and integrity.

He is the founder of the Paranormal Existence Research Society (P.E.R.S.), an internationally recognized team with branches across the United States in FL, GA, NE, IN, & New England, and internationally in the U.K., Italy, Greece, and Brazil. P.E.R.S. is known for its scientific approach, professionalism, and dedication to helping families and individuals experiencing disturbing activity.

Bill also serves as the Chief Operating Officer of The Warren Society for Paranormal Research and Education, carrying forward the legacy of the legendary Ed and Lorraine Warren by continuing their mission to investigate, educate, and help those affected by the paranormal.

His groundbreaking work and compelling personal story have brought him to major television networks and media outlets, including Discovery+, Travel Channel, Destination America, MAX, and Paraflixx, as well as numerous radio shows, podcasts, and publications such as American Paranormal Magazine. In 2016, Bill appeared on Ghost Asylum, sharing one of his most chilling captures from Castillo de San Marcos in St. Augustine, Florida. His voice has become a trusted one not only in investigations but also in the global conversation about the reality of the paranormal.

A sought-after paranormal educator and public speaker, Bill is a celebrity guest at conventions, paranormal conferences, schools, and libraries worldwide, sharing his knowledge, along with entertaining, on the realities of the paranormal versus the myths seen on TV. While widely recognized from television and media appearances, Bill is equally known for his commitment to ethically and truthfully assisting those in need.

In 2025, Bill released his highly anticipated autobiography, Living Life Haunted, a raw and riveting account of his decades-long journey into the world of the paranormal. The book reveals not just his most terrifying cases-from chilling hauntings to demonic battles-but also the personal struggles, the quiet moments of doubt, and the unwavering sense of purpose that have guided his life. With a foreword by David Sloan, author and caretaker of the infamous Robert the Doll, the book has been praised as a gripping look at the life of a man called to walk in shadows few dare to face.

Beyond the paranormal, Bill is also a seasoned IT Director with over 33 years of experience in information technology, cybersecurity, and marketing. His expertise in technology has uniquely enhanced his investigative work, allowing him to integrate advanced tools into the study of paranormal phenomena.

At the heart of all his work is a simple mission: to protect, to educate, and to help. For Bill, the paranormal has never been about chasing fear or fame-it has always been about standing on the front lines between the living and the dead, between light and darkness, and ensuring no one has to face the unknown alone.

Bill is honored to be a member of the Holy Sword Apostolate Clergy Network, an organization dedicated to assisting individuals who may be experiencing supernatural afflictions. In many cases, those in need require prayer, counseling, or spiritual guidance. As part of this esteemed network, Bill serves as both a parapsychologist and demonologist, offering his expertise to help those seeking support and relief.
- IMDb mini biography by: Dr. Bill Slevin