'The book is the Key. The Last Moscow" (the second Russian Booker Prize in 2014) and the autobiographical novel "Pilgrim" belong to archival prose, in which the personal fate of the author is closely intertwined with the events of a century ago. The heroes of the first plan — Marina Tsvetaeva and Boris Pasternak, Vladimir Lugovskoy and Daniil Andreev - here give way to the unknown to the general public Varvara Malakhieva-Mirovich, the poet and author of a unique diary, Olga Bessarabova and her brother Boris, who became the prototype of Tsvetaeva's "Egorushka", the writer Maria Belkina, the Lugovsky and Dobrovykh families. All of them came to the surface of the archival novel from the surfaced Atlantis of diaries and letters, and with them the old Moscow, which remained only on maps and in memories.