Hieronymus Bosch. One of the most mysterious artists of the Middle Ages, in whose works historians see a connection with the Adamite sect, known not only for its heretical views, but also for its frantic orgies. Is it true that followers of the Adamites exist today and still do keep Bosch's secrets? This question haunts London detectives Nicholas Hall and Rebecca Wenstone, who are investigating the murder of a young girl and the disappearance of her lover. Notes found in the house of the murdered woman directly indicate her connection with the Adamites. Detectives understand that in order to solve this complex case, they will have to risk their lives to infiltrate the sect.