Someone is leaving mysterious clues around the neighborhood, and it is up to the best detective team in town to solve the case. Henry and his massive dog, Mudge, are thrilled when they discover a secret code that kicks off a thrilling backyard investigation. You will join this dynamic duo as they put on their detective hats and start following the strange trail of evidence, which surprisingly consists of delicious crackers. Mudge is naturally an excellent partner for this particular mystery, using his powerful nose to sniff out the tasty clues hidden in bushes and behind fences. As you track the cracker path alongside Henry, you will try to guess who is leaving these snacks behind and where they ultimately lead. This exciting chapter book brings just the right amount of suspense and humor, proving that every good mystery is better when shared with a faithful canine companion.