The Diamond Heist season 1, titled "Limited Series," unfolds in the year 2000, focusing on a group of South-East London criminals planning an audacious robbery targeting the Millennium Dome's De Beers diamond exhibition. The criminals, led by Lee Wenham, devise a plan to ram-raid the Dome in broad daylight using a bulldozer, steal a rare collection of diamonds valued at approximately £350 million, and escape by speedboat on the River Thames.

The series begins by introducing Lee Wenham and his background, establishing his motivations and connections within the East End criminal scene. He recruits a specialized team, each member bringing unique skills necessary for the heist. The group meticulously plans the operation, studying the Dome's security measures and timing their attack to maximize surprise and minimize resistance.

On the day of the heist, the criminals execute their plan by driving a bulldozer directly into the Millennium Dome's entrance, breaking through the security barriers. They swiftly move to the diamond exhibit, where they encounter the display cases holding the precious stones. The team uses tools to break open the cases and seize the diamonds, working efficiently under the pressure of time.

Meanwhile, the Flying Squad, a specialized police unit led by Jon Shatford, has been surveilling the gang, anticipating the heist. As the criminals attempt to flee, the police engage in a tense pursuit. The gang makes their way to the Thames, where a speedboat awaits to facilitate their escape. The criminals board the boat and attempt to speed away along the river.

The police chase unfolds with escalating tension. The gang navigates the Thames, trying to evade capture, while the Flying Squad coordinates efforts to intercept them. The pursuit involves strategic maneuvers on both sides, with the criminals attempting to use the river's twists and turns to their advantage.

Despite their efforts, the police manage to corner the gang. A confrontation ensues on the river, involving attempts by the criminals to resist arrest and secure their loot. The sequence includes detailed moments of struggle, negotiation, and tactical decisions by both the criminals and the police.

Ultimately, the police succeed in apprehending the gang members and recovering the stolen diamonds. The series concludes by reflecting on the heist's impact, the criminals' fates, and the law enforcement operation that prevented the theft from becoming a lasting success.

Throughout the series, the narrative alternates between the perspectives of the criminals and the police, providing a comprehensive view of the planning, execution, and aftermath of the heist. The story is told in strict chronological order, capturing every major plot point, twist, and key decision that drives the story forward, including the detailed sequences of the ram-raid, the theft, the escape attempt, and the police pursuit. The series spans three episodes, each building on the previous to deliver a full account of the Millennium Dome diamond heist attempt in 2000.

The ending of The Diamond Heist (2025 limited series) shows the audacious plan to steal the Millennium Star diamond from the Millennium Dome ultimately failing due to police surveillance and intervention. The gang led by Lee Wenham is caught before they can escape, and the heist is foiled. The main criminals face arrest and legal consequences, while Lee Wenham moves on from the failed robbery, reflecting on the events and his life.

Expanded narrative of the ending scene by scene:

The final episode opens with the gang preparing for the heist in meticulous detail. Lee Wenham, the charismatic leader, coordinates with his crew--Ray Betson, Bob Adams, Bill Cockram, Aldo Ciarrocchi, and Terry Millman--each assigned specific roles. The plan is to ram-raid the Millennium Dome, grab the £200 million Millennium Star diamond, and escape by boat on the Thames.

As the gang moves into position on the night of November 7, 2000, tension builds. The police, however, have been surveilling them closely, having gathered intelligence on their plan. The scene cuts between the gang's nervous but determined actions and the police preparing to intercept.

The gang breaches the Dome's perimeter, smashing through barriers with a vehicle. Inside, they attempt to access the safe containing the diamond. Bob Adams works on the safe, while Bill Cockram and Terry Millman stand guard, ready for confrontation. Aldo Ciarrocchi handles technical aspects, but the pressure mounts.

Suddenly, police officers swarm the scene. The gang is caught off guard and quickly overwhelmed. The heist collapses as the criminals are arrested on the spot. The diamond remains secure, untouched.

In the aftermath, the series shows Lee Wenham reflecting on the failure. He discusses his motivations, the risks taken, and the consequences. The other gang members face their fates: some are imprisoned, others face ongoing legal battles. Lee contemplates moving away, possibly to Spain, to start anew with his family.

The final moments emphasize the clash between ambition and reality, showing how the gang's daring plan was undone by law enforcement's vigilance. The series closes with archival footage and interviews underscoring the real-life impact of the failed heist on all involved.

Thus, the ending portrays the heist's failure, the gang's capture, and the personal reckonings of the main characters, especially Lee Wenham, who survives but must reckon with the consequences of his criminal life.

The main criminals are a group of South-East London gangsters, including Lee Wenham, who comes from a notorious Gypsy family and was destined for a life of crime. Their motivation is to pull off one of the most audacious heists by stealing a rare diamond collection worth £350 million from the Millennium Dome in broad daylight, aiming for a high-stakes, high-reward crime.

The criminals planned to ram-raid the Millennium Dome using a bulldozer or truck, grab the rare diamonds including the 203-carat Millennium Star, and escape by speedboat down the River Thames. Their plan was elaborate and felt like a scene from a James Bond or Mission: Impossible movie, involving a bold daylight attack and a fast river escape.

The Metropolitan Police's Flying Squad had been surveilling the criminals closely and were prepared to stop the heist. They tracked the gang's movements and ultimately caught them in the act, preventing the theft from succeeding.

The series includes real interviews with both the criminals involved and the police officers who handled the case, providing perspectives from both sides. This approach gives the story an authentic feel and allows viewers to understand the events from multiple viewpoints.

The diamond at the center of the heist is the Millennium Star, a 203.04-carat, D-flawless, pear-shaped diamond owned by De Beers. It is considered one of the world's most valuable gems and was the centerpiece of the Millennium Jewels collection exhibited inside the Millennium Dome.

The Diamond Heist (2025) is rated TV-MA and is not considered family friendly for children. It contains moderate profanity, mild alcohol and drug use, and mild frightening or intense scenes. There is no sex, nudity, violence, or gore depicted in the series.

Potentially objectionable or upsetting aspects for children or sensitive viewers include: - Use of moderate strong language - Mild scenes involving alcohol and drug use - Some mild suspense or tension that could be intense for sensitive viewers

There are no graphic violent or sexual scenes, but the mature language and thematic elements related to crime and heist planning make it more suitable for adult audiences.

In the TV show titled The Diamond Heist, season 1 "Limited Series" (2025), the dog does not die. The dog is central to the plot as it carries a stash of stolen diamonds, and despite being in distress at times, it remains unharmed throughout the series. The story involves a young boy and the dog working together to outsmart thieves, emphasizing teamwork and adventure rather than harm coming to the dog.