Mystery of the Nazi and the portrait of a Welsh lady
17 January 2014 Last updated at 09:46 GMT
A portrait of a 16th Century Welsh noblewoman was discovered in the art collection of leading Nazi Hermann Goering.
But how did this grand Welsh lady get into Nazi hands?
The painting is now owned by the National Museum of Wales but during World War Two it was in the collection gathered by Hermann Goering, Hitler's deputy and the man who founded the Gestapo.
Oliver Fairclough, the museum's keeper of art, explains what happened.