The FSB asked Gurov and Kryachko, from Moscow Criminal Investigation, to accompany General-polkovnik Smirnov on a trip to an international symposium in London. The legendary investigators agreed. But the routine-looking assignment turned out to be an extremely dangerous affair. Almost as soon as the general and his accompanying detectives boarded a Berlin train, attempts on Smirnov began one after another. Gurov and Kryachko had to take on a dangerous and confusing investigation that ultimately led them to grim, terrifying London slums, where even Mr. Holmes and Dr. Watson didn’t feel comfortable…