The case of black dervishes. Anonymous

2018. Moscow. Senior investigator Orest Volin is investigating a case associated with the loss of a valuable copy of the Qur'an Usman. The case is complicated by the murder of the kidnapper. Volin concludes that in fact the thief was to steal the original Qur'an Usman, who is a Muslim shrine and was brought from Tashkent to St. Petersburg.

1923, just these days. The next diary of the Detective Zagorsky talks about the detective’s trip to Tashkent. At the same time, from a special car following from Ufa, the theft of the famous Muslim shrine - the Qur'an Usman. It is assumed that the Qur'an Usman contains some apocryphal suras and verses given from above the Prophet Muhammad, but withdrawn from the final version of the sacred book in connection with their danger to the faithful. If the Qur'an is packed in unkind hands, this can destroy the entire Muslim world. Zagorsky and his faithful assistant Ganzalin take up the matter...