When considering the answer to the question, "Who or what was responsible for the death of Anneliese Michel?" as with all mysteries it is best to consider every opinion, especially an informed one. Tonight we interview Father John Duffey, author of the book, Lessons Learned: The Anneliese Michel Exorcism: The Implementation of a Safe and Thorough Examination, Determination, and Exorcism of Demonic Possession. Father Duffey is a former priest for the New American Catholic Church and Chaplain for the American Legion and has been researching and investigating incidents of suspected demonic and other spiritual activity since 1999, and researching matters of human behavior and anthropology since 2002. Father Duffey has formal training and experience in military law enforcement and anti-terrorism intelligence operations, general psychology, cultural anthropology, parapsychology, theology, and counseling.