The case of the kidnapped dog

Berta is gone! - With these words, one winter morning of the Seva and Misha brothers began. Did the boys think that the holidays in the village would turn into a new detective adventure?! It remains only to be friends - Tosu and Tamusu - the same restless lovers of investigations and secrets, and get down to business!
The abduction of a dog of an elite breed - it would seem that there is nothing confusing in this event. After all, a dog can be profitably selling. But no! Secrets lie in the little things! Rather, open the book and, together with its main characters by grains, collect the keys to a solution to an unusual abduction. The detective will be interesting to readers of 8-12 years. And if you do not want to part with a friendly four friends, read another exciting story with their participation - The Secret of an abandoned house