Before you is another case of the “dashing couple” from the Institute of Experimental History - the desperate Valdar Kamdil and his bosom friend nicknamed the Fox. The case of St. Bartholomew's Night, on which for some reason EVERYTHING WENT WRONG! Paris is in the hands of Catholics, but the Louvre is captured by the HUGENOTS!.. The Duke of Guise - and not without reason! - is about to usurp the crown of France!.. Camdil, made up as Henry of Navarre, must rescue the REAL Henry from captivity, but... the future great king has DISAPPEARED without a trace! And this is just the beginning. REAL DIFFICULTIES are yet to come!..