The Knights of the Order of the Temple of Solomon are found in fictional literature from the Middle Ages to Sir Walter Scott and beyond, even appearing in computer games. Nicholson separates the surviving historical evidence from speculative associations with Freemasonry, the Holy Grail and space travel: beginning with the Templars' origins during the Crusades she considers their religious life, their service to Europe's kings and their commercial and economic activities, up to the order's dissolution in 1312.