When a wealthy benefactor is found dead in Michaelhouse Brother Michael & Matthew Bartholomew must find the culprit before the College is accused of foul play. At the same time Cambridge is plagued by a mystery thief who is targeting rich pilgrims. Moreover pranksters are at large in the University staging a series of practical jokes that are growing increasingly dangerous & that are dividing scholars into bitterly opposed factions. Bartholomew & Michael soon learn that their various mysteries are connected & it becomes a race against time to catch the killer-thief before the University explodes into a violent conflict that could destroy it forever.