Did Da Vinci hide clues in his art? - Digging For The Truth | Sky HISTORY TV Channel

Did Da Vinci hide clues in his art? - Digging For The Truth

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What (or perhaps who) is the holy grail? And could a descendant for Jesus and Mary be walking the streets today? (Season 2, Episode 4)

Alice Roberts standing by the sea

Is the Grail hidden in the UK? - Lost Grail with Alice Roberts

Vicky McClure looks at a man who has his back to the camera while she listens to what he is saying

The truth about Edinburgh's infamous killers - Britain's Murder Map with Vicky McClure and Jonny Owen

Promotional artwork for Britain's Murder Map

Britain’s Murder Map with Vicky McClure and Jonny Owen

Foxy and Bruce inspecting an AK-47

Killed more people than the atomic bomb?! - Battle Treasures with Foxy and Bruce

Dr Travis Taylor looking confused

Are we summoning UFOs? - Curse of Skinwalker Ranch

Rick Edwards wearing a white hard hat in the ruins of a castle

The war hero who destroyed his own £172 million castle - Great British Castle Rescue