The Foursome from Swampland

Something strange is happening in the quiet town with the amusing name Trjasina! For many, many years, it had been considered the calmest place in the area—but suddenly a chain of troubles began. First, everyone’s favorite at school disappeared—Mrs. Lars, the teacher. A couple of days later, someone broke into the house of an elderly lady—the oldest resident of the town. Four friends—Arthur, Viola, Rose, and Luke—are sure these two events are connected. The kids begin their own investigation. But will they be able to gather evidence and find the culprit?