The Scream: I found the stolen painting
12 February 2014 Last updated at 00:27 GMT
In 1994 Edvard Munch's famous painting The Scream was stolen from a Norwegian art museum. It was recovered in a daring undercover operation by British detectives. Charles Hill was one of those detectives who posed as an art dealer to trick the thieves into returning the painting.
Witness is a World Service radio programme of the stories of our times told by the people who were there.
Produced by Lucy Burns and Directed by Claire Tailyour