In the fourth episode of the documentary project with Father Andrei Tkachev, we learn: How a Russian poetess from St. Petersburg became a nun, after whom a street in Paris was named? Why was she disliked by the future Metropolitan Antony of Surozh? And what ultimately brought them together? How did the Marxist Nikolai Berdyaev become a deeply devout philosopher by the end of his life? And what did he dream of before his death? Why did Israel award the title of Righteous Among the Nations to the Russian nun Maria (Skobtsova)? And why did she voluntarily go to the gas chamber?