Paris, 1585. Giordano Bruno, heretic, philosopher, and spy for Elizabeth's minister Sir Francis Walsingham, has come to Paris, a city on the edge of catastrophe. King Henri III is surrounded by enemies: the Duke of Guise's Catholic League; Henri of Navarre's Protestant army; and from within his own court, where his mother Catherine of Medici wields immense influence. Bruno, alone and near destitute, turns to old friend and zealous preacher Paul Lefevre...