In 13th century Europe, political turmoil is the order of the day and the Fool's Guild and its agents - jesters, jugglers, and knaves to a man - works behind the scenes to manipulate events, trying to maintain a balance of power. Theophilos, a member of the Guild known by many names, is still recovering from his last mission during which he was severely wounded and nearly lost his life but, in the person of Viola, found himself an apprentice and a...

In 1204 A.D., the Fools' Guild is in hiding, under attack from the forces of Pope Innocent III. Theophilos and Claudia, jesters with the Guild, are sent to enlist the help of a former guild member - the minstrel Folquet, now the abbot Folq at a Cistercian monastery - to intercede with the pope on their behalf. But while they are at the abbey pleading their case, a gruesome murder takes place - a monk is killed in the librarium and a cryptic message...

In 1205, Theophilos-a fool by trade, a family man by choice, and a spy by design-belongs, along with his family, to the Fools' Guild, a group that secretly maintains the fragile order of society. In Toulouse, that order is threatened when, unexpectedly, a man claiming to be a full brother of the ruling count is found one morning in a local bordello next to a dead whore, killed with his own sword. Now, Theophilos and his family must uncover the truth....