The most poorly studied topic in the history of the heroic defense of Sevastopol is the actions of special forces of the Black Sea Fleet and, above all, the Separate Reconnaissance Detachment of the Reconnaissance Division of the Headquarters of the Black Sea Fleet. The author of this book did a herculean job. He found out the details of the military operations of the special forces of the Black Sea Fleet against German and Romanian saboteurs during the Great Patriotic War. Intelligence against intelligence, special forces against special forces converged in a grandiose battle for the peninsula. And ours turned out to be stronger, and how and why - the book will tell. Everything is here for the first time: the actions of our intelligence in the Black Sea theater of operations and the actions of the German special forces.