At the end of the war, lawyer Gleb Serebryakov was brutally murdered in his Moscow apartment. The apartment was robbed. MUR investigator Efim Berezhnoy is sure that the attackers were looking for something specific: traces of torture remained on the lawyer’s body. The bandits left their “business cards”—two card aces—at the crime scene. Exactly the same marks were left behind by a particularly dangerous gang that robbed and killed people even before the war. Berezhnoy brings up old cases and establishes that during the detention of those pre-war raiders, part of the jewelry that the detectives used as bait disappeared without a trace, and that Serebryakov played an important role in that case. What if the lawyer's death is an echo of that dark and twisted story?