Summer, vacations and boredom!..What should real detectives Petka and Cruz do in the summer at the cottage during the holidays? Of course, watching a suspicious neighbor. The guys spend all their free time doing just that.And thanks to their efforts, they manage to track down two dangerous criminals at once, who have more than one victim on their account.But the guys are not acting alone. Dasha and Olya are helping them. At the same time, Petka and Cruz, with the help of a village girl, Tanya, find a hiding place. What secrets are hidden in the dungeon?.. - A new edition of the popular detective series for teenagers "Dasha and Company".- A famously twisted plot, interesting puzzles, characters with a great sense of humor — this book has all the components of a high-quality teen detective story. And it will inspire an adult reader to remember his own youthful investigations.- Ekaterina Wilmont is one of the ten best—selling authors in Russia. Her books have sold over 5 million copies!