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3 Episodes 2019 - 2019
Episode 1
Britain's longest serving murderer, John Massey, submits himself to a ground-breaking biological and psychological investigation to determine whether he truly had control over his actions.
Episode 2
Aged 20, Paul Aldridge was convicted of murder by joint enterprise and sentenced to life in prison. Now Paul submits himself to a series of biological and psychological tests.
Episode 3
Anthony Powell served over 21 years in prison for murder. Now he submits himself to biological and psychological investigations to determine whether he had control over his actions.