Ever since the mysterious double panel painting known as the Wilton Diptych was acquired for the National Gallery in 1929, speculation about its origins have been rife. Although many discoveries have been made about its subject, we are still none the wiser regarding its origins. Who are the characters in this painting, what are they trying to tell us and what can this painting reveal about England or even Europe at the turn of the 15th century? Why was this enigmatic painting produced and how has it come to represent the quintessential painting style we call International Gothic?