Yuri Semenov is known to readers for the novels "Farewell, Rocky Mountains" and "Commissioner of State Security," published by the Military Publishing House. The novel "Trail of the Doomed" tells about the heroic struggle of our counterintelligence officers with Bandera - OUN in the first post-war years in the western regions of Ukraine. OUN - Organization of Ukrainian Nationalists - was well conspiratorial, had a clear military structure. The Chekists, introduced into the ranks of the OUN, managed to neutralize many of its leaders.