Understand the implication of twisting the faith and belief of others by reviewing how psychics and mediums have worked their "magic" to fleece and distort the beliefs of folks.
The true-believer syndrome merits study by science. What is it that compels a person, past all reason, to believe the unbelievable. How can an otherwise sane individual become so enamored of a fantasy, an imposture, that even after it's exposed in the bright light of day he still clings to it — indeed, clings to it all the harder?… No amount of logic can shatter a faith consciously based on a lie.
— M. Lamar Keene and Allen Spraggett
Full BBC investigation podcast as "Fake Psychic"
See also about Camp Chesterfield scamming punters since 1891 and still at it in the 2000s.
Camp Chesterfield as founded in 1891 and is the home of the Indiana Association of Spiritualists, located in Chesterfield, Indiana. Camp Chesterfield offers Spiritualist Church services, seminary, and mediumship, faith healing, and spiritual development classes, as well as psychic readings for patrons.
As recent at 2002 Filed at centerforinquiry.org "Undercover Among the Spirits: Investigating Camp Chesterfield "
See also "How to cheat at everything" by Simon Lovell