The secret of the thief-invisible. Bliton E.

The fourth week of summer went, and young detectives only do that they hide from the heat in the shade of trees and are ill with boredom. In Peterswood, not a single hint of a secret! In order to somehow unwind, the guys go on a sports festival and meet the inspector of Jenx there, but he has nothing to please the team of detectives. Fortunately, luck smiles at the guys: a thief is declared in Peterswood and not a simple, but invisible. Young detectives and the Democratic Democratic Democratic Detective are not afraid of this-they are sure that they expose the mysterious criminal until the end of the summer holidays!