Andrew Calder is the founder of Georgia Paranormal Research Team also known as G.P.R.T.  He served many years in the capacity of law enforcement officer, serving for both city and state agencies and as a private investigator, specializing in video surveillance.

Andrew is an ordained priest with the Communion of Evangelical Episcopal Churches. He has knowledge and experience in the areas of the occult, witchcraft, psychic abilities, tarot, quija boards, and other means associated with such phenomena associated with malevolent or demonic hauntings.