Experts uncover who wrote hidden 'madman' message on The Scream painting and why
The tiny inscription on one of the world's most famous paintings has been a mystery until now
Edvard Munch
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Scientists solve white mark mystery in The Scream
One of art's mysteries has been solved, and while the lady in the Mona Lisa remains unconfirmed, we now know what the mark in The Scream is.