At a certain point in his life, Sherlock Holmes decided to retire to the South Downs, where his interests would focus on studying the life of bees and writing a related manuscript. Here he hoped it would be his last 'harbor', and that the period of adventures was coming to a definitive close.
A decision that was meant to remain unfulfilled, as he would have the utmost honor of being visited in this isolated refuge by the Prime Minister himself, who would appeal to his patriotic sentiments to reconsider his decision.
Thus, from one moment to the next, in order to dismantle a network of spies operating in the country, he would leave the idyllic life of the English countryside and find himself in Chicago, at a special training school from which he would graduate equipped with all the necessary knowledge of counterintelligence.
From then on, his remarkable intellect and unparalleled ability would lead him to the traces of this secret organization, and slowly and methodically he would eventually reach Von Borg - the mastermind of the foreign agents.
However, for Sherlock Holmes, this would be a bitter experience, as he would feel the dreadful messages of the times, and the capture of the German chief spy would be his last feat before retiring definitively from the scene.
[Excerpt from the text on the back cover of the edition]
