For the first time, Scotland Yard opens its secret files to bring you the authentic true stories of some of its most famous cases. The title comes from the emergency telephone number in use at the time, and the series was introduced by Chief Superintendent Davidson, curator of the Crime Museum – more commonly known as the “Black Museum” - at Scotland Yard, London, England.

A criminal mastermind devises a plot to drug guards at a bonded warehouse at London’s Heathrow Airport, and steal a fortune in gold in transit…