The Secret of the Silver Box

Life often imposes its harsh laws on us. The heroine of the novel "The Secret of the Silver Box," Muscovite Lyudmila Velingurskaya, fully felt the breath of death when she found herself in a small town in the southern Urals.
It... turns out that even in a quiet town, not-so-good events can happen. Starting an investigation into the mysterious disappearance of her aunt on her own initiative, the girl could not foresee the dangers that awaited her ahead. Times change, centuries change, but the passion for profit at any cost sometimes does not stop some people before anything. As often happens in life, the fates of the heroes of the novel are also intertwined with good and evil, the past and the present.
And who is he, the girl's new acquaintance: a guardian angel or an enemy?