About the book: year / After the murder of his twin brother, FSB agent Igor Sergeevich Sokolsky finds himself drawn into a dangerous investigation. His enemies are local crime bosses and foreign intelligence agents. His friends are work colleagues who are as dedicated to their work as he is. The confrontation drags on, with each new fact, more and more new horizons are outlined ahead, which, at first glance, have no end. Will the heroes be able to unravel the tangled ball of threads and neutralize all the criminals??