Doughnut Street School and the mystery of the doughnut hole

Back cover: "Old Mr. Edwin Van Rink loved doughnuts. He loved them so much that the children of the town affectionately nicknamed him 'The Doughnut Man'. But Mr. Van Rink isn't just full of fluffy dough and creamy icing and colorful sprinkles. He has a secret doughnut plan to not only make the town world famous, but he also may just save it from disaster as well. Follow the adventures of the children and their beloved Doughnut Man as they discover the 'hole' truth behind the greatest doughnut mystery of all time."