The silver tetradrachm of King Herod Antipas is the most expensive artifact on earth, because it is one of the thirty coins that Judas Iscariot received for his act. This is the price of the greatest betrayal and greatest self-sacrifice in human history. There is a legend that this fatal coin carries dark energy and brings only grief and suffering to its owner, however, there are no fewer people who want to own it. For many years, the artifact was safely hidden in a cache, but one day it surfaced into the light of day, causing a series of strange deaths. Amateur detective Nadezhda Lebedeva, of course, could not miss such an exciting and dangerous case, especially since her best friend was at the center of events.