Nat the Cat and his buddy Pat the Rat are out for a stroll when they spot something totally bizarre. It is a strange, mysterious thing sitting right in front of them, and it is covered in a thick layer of dust! Neither of them has any idea what this dusty object could be, but they are determined to solve the puzzle. Nat and Pat will have to put their heads together, gather clues, and figure out exactly what they have discovered. With fast-paced action, bold two-color illustrations, and hilarious dialogue, this early chapter book is perfect for kids who are ready to move beyond beginner readers. Join Nat and Pat as they crack the case in a funny, confidence-building adventure!