Ep. 4: Keaton and Semionov escape the Russian Mafia and discuss the lost gold roubles of Nicholas II.

While driving in the Świętokrzyskie Mountains, Keaton picks up Andrei Semionov, a Russian Mafia teacher owing 100,000 dollars. They evade pursuers by detonating their vehicle and take shelter in an igloo during a blizzard. Inside, they debate the fate of 500 tons of gold roubles left by Nicholas II and his family. Semionov claims Nikita Volkonsky sank the treasure in the Arctic Ocean after mistaking a humpback whale for a U-boat, while Keaton believes it went to Siberia. Volkonsky’s journey ended with his wife’s death and his son becoming an orphan in China. The next day, the Russian Mafia spots them. Semionov survives a chest wound because a diary protected his heart. As they walk toward town, it is implied that Semionov is Volkonsky’s son.
Episodes
- Ep. 1 · Investigating Leon Papas's suspicious fall in Isidoros Village leads to ancient treasure secrets.
- Ep. 2 · Bounty hunters target Red Army Faction members in Düsseldorf while Keaton intervenes.
- Ep. 3 · Keaton and Flora escape pursuit after Marco Belnine's funeral in Florence.
- Ep. 4 · Keaton and Semionov escape the Russian Mafia and discuss the lost gold roubles of Nicholas II.
- Ep. 5 · Keaton’s Paris Lecture and Reunion with Professor Scott
- Ep. 6 · Keaton and Plummer protect Guinevere's tomb from Edward Langley's construction plans.
- Ep. 7 · Keaton and Taihei seek pennyroyal mint to recreate summer pudding with Patricia's help.
- Ep. 8 · Keaton negotiates a ransom drop after Shuji Takita is kidnapped in Cardiff.