Bring into bondage

"When Kathy Briscow is summoned home by a mysterious telegram, she and her beau, Freddie Little, rush to her parents' farm in Kansas in Freddie's plane. The farm has been repeatedly vandalized, with the attacks getting more and more serious. Freddie and Kathy decide to stay on long enough to find the vandals before someone is killed. But even dark secrets, a frightened boy, and angry townsfolk don't get Kathy and Freddie in the near the trouble as getting caught spooning behind the barn. That's when Pa Briscow gets the shotfun out"-- page 4 of cover.