A unique illusionist Christopher Varshavsky appears in Europe, whose unique attractions do not look like ordinary shows. It's not for nothing that everyone calls him a magician and a wizard. Christopher's performances are more like the fruits of black magic than the theatrical art of deception. In a huge silver ball, he resurrects the great people of the past, who go beyond the magical sphere and come into contact with the audience. But who is behind the illusionist? Who gave him such fantastic opportunities? Andrey Krymov and Anton Antonovich Dolgopolov are flying to the Czech Republic to see one of the wonders of Warsaw. His illusion is held at Dux Castle, where the famous heartthrob Giacomo Casanova once lived and died.…Arthur Gideon's novels from the Black Swans series are mystical thrillers with a historical background, where reality and the other world are intertwined, hidden fears come to life, and urban legends and ancient legends find a new incarnation in our days.