Muriel Gray tells the story of the Glasgow Boys, the group of late 19th century painters who put Glasgow on the art world map. Focusing mainly on just four of the Boys - John Lavery, James Guthrie, George Henry and EA Hornel - she examines their masterpieces in detail and charts their shifting friendships. Following in the Boys' footsteps, Muriel travels through Scotland and northern France to uncover the sources of their inspiration and show just how radical their paintings were.