In August 1963, a gang used a false railway signal to stop a Royal Mail train and steal £2.6 million. The operation was bold, but fingerprints, informants and conspicuous spending rapidly unravelled it.

In August 1963, a gang used a false railway signal to stop a Royal Mail train and steal £2.6 million. The operation was bold, but fingerprints, informants and conspicuous spending rapidly unravelled it.