What disease Alexander Blok died from is still a mystery. It is only known that it was not possible to make a specific diagnosis, and the doctors, being completely helpless, could only observe the rapid development of the symptoms of an unknown disease. The internationally recognized talent and greatest poet of the Silver Age screamed in unbearable pain, experiencing incredible agony. And everyone around him - Mayakovsky, Chukovsky, Gippius, Merezhkovsky, Soloviev and others - were convinced that the poet was poisoned by the special services. What caused Blok’s creative crisis? Why did the Soviet government refuse to release the poet abroad for treatment? Why even Lunacharsky’s petition and Gorky did not convince Lenin of Blok’s trustworthiness? How were Blok’s relationship with Anna Akhmatova complicated? Why was the head of Petroslitizdat Ionov, who tried to investigate the causes of Blok’s death, sentenced to death? On what is the version based that Blok did not die a natural death, but was poisoned intelligence services?