On December 22nd, 2000 three of the world's greatest art treasures were stolen from the National Museum in Stockholm. Together the Rembrandt and two Renoir paintings were valued at 50 million dollars.

It was the biggest art heist in American history - half a billion dollar's worth of paintings snatched from the walls of a Boston gallery. The haul included a rare Vermeer and paintings by Rembrandt and Degas.

It's the most important question in the worldwide art market is it genuine? Or is it fake? When a forgery is passed off as the real thing, there are fortunes to be made and lost. For nearly a decade two Englishmen did just that.

Skriet av norska konstnären Edvard Munch är en av de mest kända och kraftfulla konstverken i konsthistorien.

För nära trettio år sedan stals sju konstverk, inklusive en ovärderlig Cezanne, från en privat samling i Amerika.

På 1970-talet hade svarta börsen med religiösa artefakter exploderat till en mångmiljon dollar industri.