Reports suggest fewer people in Britain today follow a religion than ever before. Yet many still cling to the idea of life after death, spirits and the supernatural.
Why are some often judged as true believers and others as religious nuts? And what happens when the worlds of hard scientific fact and pure faith collide?
In this documentary, clinical psychologist Dr Tanya Byron explores what some consider as the fine line between religious devotion and psychiatric disorder. She sees what happens when rational scientists try to analyse religious phenomena like Speaking in Tongues and Hearing Voices, and considers the beliefs of faith healers who claim miracles happen.
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