Mystery at Los Piñones: Diego is invited by his cousin's family to spend the holidays in Los Piñones, a small village where they have a house for recreation and that only gets a little bit livelier with the arrival of summer. But all the calm of the place will be disturbed by the mysterious disappearance of the queen of the fair on the very day of her coronation.
Mystery in the Camp: The follow up of the adventures of Diego and his friends. This time the mystery moves to a camp located in the Andes mountains. There, the stories of suspense are intertwined and will keep the readers' interest.
Mystery at La Tirana: In this third delivery, Cósima the girl that Diego and Pablo met at the camp during last September's vacation, invites both of them to a spectacular trip to northern Chile to see the magical desert and the traditional festival of La Tirana. But that trip is overshadowed by the disappearance of important documents.