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Rough Diamond

Rough Diamond

Always True Crime 4 Episodes Oct 20, 2026

Rough Diamond is a true-crime series about a 1965 theft of the world's largest uncut diamond from London's Natural History Museum. David Knight, a 24-year-old window cleaner who lived nearby, was arrested despite no evidence placing him at the scene and doubts about the police confession. The story follows what happened when he entered prison and the criminal life he led after leaving Wormwood Scrubs, ending in a famous heist few knew he had carried out. Josie Long narrates this Audio Always and Colenso Films production.

Episodes

The Omega
The Omega Oct 20, 2026 28:42 David never serves time for the theft of a painting now worth over £200 million. But it won’t be the last time he’s incarcerated. Increasingly housebound David begins to write letters, hundreds of letters, many are funny and insightful, but as time wears on they become increasingly vicious and threatening.The letters bring the police…and the CIA… to David’s door. -An Audio Always and Colenso
The Guitar Player
The Guitar Player Oct 13, 2026 40:44 David has stolen one of the world’s rarest paintings, but no one knows. The police are working with a celebrity psychic to track it down. Meanwhile, David is leading them on a wild goose chase of ransom letters and demands. David is never named as the thief, and some of his family still fear the repercussions of naming him. But his nephew thinks it’s time the world knew the truth.-An Audio Al
A Perverse Robin Hood
A Perverse Robin Hood Oct 6, 2026 23:41 David has emerged from prison with a mission - he will earn the reputation the police saddled him with. He embarks on a series of heists, from conning Penthouse subscribers to robbing one of the world’s greatest jockeys - Lestor Piggott. He flits around London, making daring rooftop escapes and flogging rare antiques. And the crimes are escalating, and David is looking at his biggest target yet.-A
Excuses, Not One
Excuses, Not One Sep 29, 2026 28:36 The police who elicited David’s confessions are heading to trial themselves. Meanwhile, David is in prison, and it’s taking a toll on his body and his mind. But Dolly’s work to get David’s story on the front page is gaining traction. His case is finally getting some attention. While Dolly is declaring her son’s innocence, prison is changing him. And when he’s released, he embarks on a differe
Diamond Dave
Diamond Dave Sep 22, 2026 30:15 David Knight lives just yards from the Natural History Museum. When the police swoop down on the home he shares with his mum and stepfather, they’re convinced they’ve got their man. But there are holes in their story. Did David really confess on the spot? Could he even have stolen the diamond? And are the police as upstanding as they seem? David’s mum, Dolly, is about to begin a campaign to clear
The Making of a Thief
The Making of a Thief Sep 22, 2026 27:43 London in the 1960s is in the grips of a crime spree…rare diamonds are being stolen. The latest is the Colenso diamond. It’s the world’s largest uncut diamond and one of the Natural History Museum’s most important pieces. When a young window cleaner is arrested a few months after the theft, his family is thrown into turmoil. David Knight will protest his innocence until the day he dies, but i
Introducing: Rough Diamond
Introducing: Rough Diamond Sep 15, 2026 0:57 A true story of crime, corruption and two impossible thefts. In 1965 the world’s largest uncut diamond is stolen from the Natural History Museum, the man arrested is David Knight, a 24 year old window cleaner who lived just yards away. Now Josie Long tells his extraordinary story. There was no evidence placing David at the scene, and the police officers who claimed he confessed were far from

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