The amazing secrets behind Vermeer's enigmatic masterpiece are revealed. It's one of the world's best-loved paintings. Tracey Chevalier's acclaimed novel further boosted its popularity, as did Peter Webber's film adaptation starring Scarlett Johansson and Colin Firth. But what is the real story behind Johannes Vermeer's extraordinary portrait? Why was it painted? Who was the girl? And why does she still fascinate us so much that more than a million people came to see her on her latest world tour? This beautifully filmed documentary is a real-life detective story that sets out to answer these questions and more. It begins with the renovation of the Mauritshuis in The Hague, to which 'Girl with a Pearl Earring' recently returned. Renowned as the jewel of northern Europe's museums, it houses a remarkable royal collection whose treasures help to reveal all about this iconic painting and its mysterious creator.