Highlights Puzzle Readers offer an innovative approach to learning that integrates puzzles and stories to develop motivated, confident readers. These Level 2 books are perfect for kids starting to read longer and more complex sentences.Knox, a snail mail carrier, delivers packages with a smile—and a hilarious joke for each recipient. In this pun-filled Level 2 Highlights Puzzle Reader, readers must solve six mazes to help Knox deliver the mail with time to spare so he can celebrate his birthday. With bonus knock-knock jokes, Knox Knocks: Special Delivery is perfect for beginning readers.