The Elizabethan court is beset by traitors at home and abroad as spies, rogues, and would-be usurpers of the throne vie for power. England, 1586. Tensions rise as threats to the realm abound. Traitors are plotting for Mary Queen of Scots to depose Elizabeth I and take the throne. Rumors of a Spanish invasion by sea mount daily. And the body of one of Sir Francis Walsingham's agents is found floating in the Thames as other agents face enemies armed...