Police Commissioner Evert Bäckström began investigating the murder of lawyer Thomas Eriksson, known for his collaboration with the local mafia. And exactly a week before, two more cases came to the commissioner’s desk. The first concerned a pet seized from a negligent owner following a denunciation by a neighbor, who was threatened with death by unknown persons if she did not withdraw the statement. In the second case, according to the testimony of an anonymous witness, a high-born aristocrat was beaten with a catalog from the London auction house Sotheby's in a parking lot just a hundred meters from the apartments of the King of Sweden. The commissioner, with a team of experienced assistants, finds out that these crimes have much more in common than the area where everything happened. At the center of criminal interests were rare objects of art with a rich history, which belonged to the family of the last Russian emperor and came to Sweden as a result of the marriage of royalty. The stakes in the pursuit of value are so high that everyone cheats everyone. Even Bäckström, armed with the sword of justice, could not resist the temptation to hit the jackpot and, in parallel with the investigation, played his own game...