It was not for nothing that Adamsberg did not want to go to a boring police colloquium in London. It was there that this risky game of tic-tac-toe began - a game of life and death. A terrible discovery in front of the ominous Highgate cemetery and Danglars' stories about Highgate vampires turned out to be only a prelude to the bloody nightmare in Garches that awaited them in their homeland, and the black tunnel under the English Channel, which so frightened Danglars, became for Adamsberg the beginning of a long journey that led him to the protected the place is the Serbian village of Kiseljevo...