The Prisoner of the Thrice-Ninth Fort

Kolia Solovyev, nicknamed Watson, in search of shelter from the rain found himself, as they say, at the wrong time and in the wrong place. This is where his misadventures began. When the blindfold was taken off Kolia's eyes, he was shocked…
The best detectives of St. Petersburg have been thrown into the search for the kidnapped teenager. However, when it turns out that international terrorists are involved in the case, the FSB gets involved. But the criminals acted too professionally, and the search is unsuccessful. Kolia's friends - Denis and Katya - conduct their own investigation. And unexpectedly, they manage to find an important clue…