这是一本全新的图画故事书，里面有6个可以拉出来的装着线索的信封，这些线索能帮助猪小妹和乔治解决那个谜题：猪爷爷和猪奶奶去哪里过暑假了？

A brand-new picture book story with six envelopes containing clues to pull out to help Peppa and George solve the mystery of where Granny and Grandpa Pig have gone on their summer holiday!