0:00 On August eighth, 1963, a single stuffed glove and a six-volt battery stopped a train carrying the equivalent of thirty million pounds.0:12 Last week, we looked at near-perfect crimes.0:16 But the Great Train Robbery wasn't just near-perfect… it was legendary.0:23 For a few crucial hours, the fifteen men who pulled it off, led by mastermind Bruce Reynolds, had achieved the impossible.0:34 Their plan was audacious, meticulously crafted over months, and for a time, it was FLAWLESS.0:43 The target was the Glasgow-to-London Royal Mail train.0:48 But not just any train on any day.0:51 The gang struck after a Bank Holiday, knowing the carriages would be heavy with an unusually large shipment of cash.1:02 Their first move was elegant deception.1:05 They tampered with the railway signals at a remote spot called Sears Crossing.1:13 No complex hacking.1:14 Just a glove stuffed over the green light, and a battery wired to the red.1:21 To the driver, Jack Mills, it was a simple, non-negotiable stop.1:27 But when he stopped, the plan’s brutality was revealed.1:32 Mills was assaulted and knocked unconscious.1:36 His co-driver, David Whitby, found the trackside phone lines cut, and was thrown down an embankment.1:46 The gang needed the train moved.1:49 One of them had even practiced on other engines.1:53 But this one was too complex.1:56 In a moment of sheer nerve, they roused the injured driver and forced HIM to drive his own train about a mile further, to Bridego Bridge.2:09 There, a human chain of robbers was waiting.2:13 In the dark, they formed a line, passing one hundred and twenty sacks of cash from the train to waiting Land Rovers.2:23 Two-and-a-half tons of money, moved with terrifying efficiency.2:29 Then, they vanished.2:31 They drove to Leatherslade Farm, their pre-arranged hideout.2:37 The plan was simple: lie low.2:39 Let the heat die down.2:42 Wait for weeks, then slip away with the money.2:46 It was the most critical phase of the operation, requiring discipline, patience, and silence.2:54 They failed on all three counts.2:57 The first mistake was greed.3:00 Instead of waiting, they immediately began splitting the loot—a reported two-point-six million pounds.3:10 The second mistake was panic.3:12 They heard media reports—incorrect reports—that the police were closing in, searching a radius that already included the farm.3:24 So they bolted.3:25 They abandoned the plan to lie low, and in their haste, they abandoned something else.3:33 Evidence.3:34 When investigators finally arrived at the farm, they found the gang’s "one big clue." Sleeping bags, bank note wrappers… and fingerprints.3:47 Not on a weapon, or a lockpick.3:50 They were on a ketchup bottle.3:53 And on the pieces of a Monopoly board.3:56 The gang that had meticulously planned the movement of a train, the timing of a national holiday, and the logistics of moving tons of cash… was brought down by a board game.4:12 Perhaps it was the greed, as the British Transport Police later speculated, that made them so careless.4:22 One by one, they were identified and arrested.4:26 The total sentence was three hundred and seven years in prison.4:32 Their brilliant plan for the heist itself was undone by the complete failure to plan for the human element… for the fear and impatience that follows.4:46 The lesson is not that the plan was bad.4:50 The plan was extraordinary.4:52 The lesson is that any plan, no matter how brilliant, is only as strong as the discipline of the people who have to live with the consequences.5:05 The most complex part of the heist wasn't stopping the train.5:11 It was what to do the morning after.