The action of Nikolai Svechin’s novel “The Ural Echo” takes place in the summer of 1913: a detective police supervisor went missing in St. Petersburg. The body was not found, but it is obvious that he was killed by criminals. Suspicion falls on a major criminal authority in the capital, nicknamed Count Platov. The search for the killer reached a dead end, but in the course of it it was possible to discover platinum stolen from the Ural mines. Terrorists from the gang of the Ural militant Lbov dug up the ataman's treasure from the ground and are preparing to kill the tsar with this money! Lykov and his assistant Avestopulo urgently went to the capital of the Urals, Yekaterinburg, where they managed to uncover a scheme for theft of precious metals, arrest Platov and defeat the local Socialist Revolutionaries. But they did not at all expect that they themselves would be drawn into a criminal whirlpool...