The Five decide to bike to Billycock Hill, where Julian and Dick''s school friend Toby lives on a farm. Toby has all the camping equipment the Five will need, so they can camp high up on the hill overlooking the countryside—and a nearby secret airfield. At the farm the Five meet Toby and his little brother Benny. Benny is a very funny, cute kid with a pet piglet called Curly. He''s very proud indeed to talk about his cousin Jeff, who''s an RAF pilot working at the secret airfield nearby. And when Cousin Jeff comes to visit one day, everyone is quite taken by him—even Timmy, who immediately offers his paw in greeting! My favourite part is near the end, when Benny runs away and leaves a message on Curly saying ‘Runned Away''