<p>George Downing came of age as a Puritan pioneer in colonial Massachusetts, before crossing the Atlantic to sign up for the English Civil War. He fast became Oliver Cromwell's chief of military intelligence and was later a diplomat and an MP. However, Downing spectacularly switched sides, shamelessly betraying his friends. He prospered under Charles II, yet he remains one of the most elusive figures of his age. In Turncoat he emerges as the ext...