Joe Crowley reveals how the salmon-farming industry's demand for live wrasse has made it the most valuable fish in Europe. How Stonehenge was put up for sale at a farm auction.

Joe Crowley reveals how the salmon-farming industry's demand for live wrasse - caught off the south coast of England - has made the lowly wrasse the most valuable fish in Europe and questions the sustainability and regulation of this new fishery. We follow the Oxford Egyptologist who lost the use of her hands and legs to sepsis four years ago return to the land of the pharaohs to continue her life's work, and Jon Cuthill learns how Stonehenge was put up for sale at a farm auction.