Watch Forensic Files online: Episode 8 Duelling Confessions

In 1963, Australian teenager John Button is accused of running down his girlfriend on the roadway after a fight. After a brutal police interrogation he confesses, than recants. He is tried and convicted of manslaughter, sentenced to a primitive Victorian-era prison. He regains his physical freedom, but is branded a guilty man. Almost forty years later, a writer uncovers evidence that another man, a known serial killer, might really be responsible. In fact, he had confessed. An accident reconstruction expert tracks down antique cars to re-create the accident, and clear a man's name decades after a cruel injustice.

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