Fan of Princess Yusupova

The wealth of representatives of the Yusupov clan was struck by the imagination of even members of the imperial surname. However, having emigrated from revolutionary Russia, the most famous of the Yusupovs, Felix Feliksovich, was able to take abroad only a small share of jewelry and arts owned by his family. The main part of the noble treasures was reliably hidden ...
These days, part of the encrypted note addressed by Prince Yusupov unknown person, which is about some valuable thing.
A lover of different things, enters the hands of the St. Petersburg Housewife of Nadezhda Lebedeva. The riddles, Nadezhda Nikolaevna, considered it a matter of honor to restore the missing part of the mysterious note and, possibly, find the cache of the princes of the Yusupovs