Treason and magic were first linked together during the reign of Edward II. Theories of occult conspiracy then regularly led to major political scandals, such as the trial of Eleanor Cobham Duchess of Gloucester in 1441. While accusations of magical treason against high-ranking figures were indeed a staple of late medieval English power politics, they acquired new significance at the Reformation when the 'superstition' embodied by magic came to be associated with proscribed Catholic belief. Francis Young here offers the first concerted historical analysis of allegations of the use of magic...