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This book contains two interesting stories by the world-famous Vsevolod Nestayko: «The Chick disappears for the second time» and «Agent of the SD». Two friends, Zhenya and Vitasik, will again find themselves in the thick of detective mysteries. Will the boys manage to get out of trouble this time? Will they have enough courage and wit? Turn the page and plunge into incredible adventures with them.

For children of primary and secondary school age.