England 1865...American, Caitlyn Cody Carrington, wishes to exonerate her British great-uncle accused of treason but his arrest is a ploy to ferret out an elusive double-agent. She is asked to serve as a spy for the Crown, reporting to the mysterious spymaster, Raven, and partnering with the charismatic Earl of Huntingdon. Both men intrigue, confuse and enthrall her...until she discovers why they do.