It was one of the greatest heists in British history. £3 million – worth over £40 million today – stolen from a moving train by a gang of thieves who almost got away with it. 50 years on, the few surviving gang members are in their 80s, yet the truth is still obscured by unanswered questions. Who was the mastermind? Why did the police fail to arrest all those involved? This one off documentary could be the last chance to find out the answers from the only people who really know what happened.
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