Following the conviction of some of those involved in the theft and handling of the Brink's-Mat gold, the police realised that those criminals only ever had half of it. Series two explores what happened to the other half, and the criminal fortune it created. As the police investigation continues, it becomes a tense, high-stakes journey into international money laundering and organised crime, while the police embark on dramatic manhunts as they desperately try to solve the longest and most expensive investigation in the history of the Metropolitan Police.

The Gold opens with the events of November 26th 1983, when six armed men broke into the Brink's-Mat security depot near London's Heathrow Airport, and inadvertently stumbled across gold bullion worth £26m. What started as ‘a typical Old Kent Road armed robbery' according to detectives at the time, became a seminal event in British criminal history, remarkable not only for the scale of the theft, at the time the biggest in world history, but for its wider legacy.