Tory Christman (born June 27, 1947) is a prominent American critic of Scientology and former member of the organization. Originally brought up a Catholic, Christman turned to Scientology after being introduced to the book Dianetics: The Modern Science of Mental Health authored by Scientology founder L. Ron Hubbard while staying with her parents in Chicago. She identified with concepts described in the book including the idea of attaining the Scientology state of clear, and became a member of the organization in 1969. She hitchhiked from Chicago to Los Angeles, in order to begin the process of studying Scientology, and initially felt that it helped improve her life. In 1972, she joined the core group of staff members within Scientology called the Sea Org. After being a member of the Scientology organization for ten years, Christman reached the spiritual Operating Thetan level of OT III, and learned the story of Xenu. She subsequently rose to a higher Operating Thetan level of OT VII, the second-highest within the organization. Her medical condition of epilepsy caused difficulty while in Scientology, as the organization did not approve of taking medication in order to manage her condition. She became an ordained minister within Scientology, and instructed celebrity member actor John Travolta in initial coursework. Christman worked in various capacities during her time with Scientology, including for its drug rehabilitation organization Narconon, and at one of the organization's Celebrity Centres. After serving in these roles, Christman came to work for the Office of Special Affairs (OSA), which functions as an intelligence agency within Scientology. She participated in multiple missions for OSA, including a 1979 operation designed to advance the organization's interests in Clearwater, Florida, and a 1985 operation assisting OSA agents during a lawsuit filed against Scientology. In 1999, OSA agents removed the censorship software "Scieno Sitter" from Christman's home computer, in order to allow her to carry out a mission of monitoring critical material about Scientology on the Internet.