ABC 20/20

In 2000, a South London gang plans to make history by stealing a priceless diamond on display at the Millennium Dome. Their risky daylight robbery requires a souped-up excavator to smash through security and a James Bond-inspired getaway down the Thames.

A security company's cash-filled headquarters in Stockholm is the target for an extraordinary robbery executed with military precision. In 2009, Swedish criminals use a helicopter and explosives to outwit the police and fly off with sacks of money.

In 2015, a vault in London's diamond district is no match for a gang of veteran thieves who pull off one of the biggest robberies in British history. Years of planning and expertise allow them to walk away with millions in cash, jewelry and valuables.

In 2003, a team of criminal experts penetrate the World Diamond Centre in Antwerp, Belgium. Their extraordinary heist takes years of observation and detailed planning to bypass surveillance so they can get away with millions of dollars worth of diamonds.

An Argentinian artist plans the perfect bank robbery with meticulous attention to detail and a bluff that fools the police. To pull off his subterranean subterfuge, he calls on his friend -- an inventor and engineer -- and seasoned underworld criminals.

In 1997, a trusted employee uses his unique position to mastermind stealing nearly $19 million, the biggest cash robbery in U.S. history. He drills his loyal friends in every detail so they don't put a foot wrong while carrying out this Los Angeles heist.