Shop of Fear

A horror story with elements of detective fiction, set in an old bookstore called "Shop of Fear".
Vasya is 12 years old and takes great pride in his bravery. Together with his mother and older sister Agatha, the boy moves into... his grandmother's old house. On the first floor is the "Shop of Fear" — an ancient bookstore that sells only horror stories. 
Soon, Vasya realizes that nightmares do not reside in books at all. At night, he hears a terrible whisper and frightening sounds of footsteps coming from behind the wall, and then he encounters an ancient evil trapped in the "Shop".
Accidentally releasing the monster, Vasya enters into a struggle with dark magic. To defeat the creature, he must uncover the secrets of the past and reveal a family mystery.