Young Cam Jansen and the 100th Day of School Mystery, Paperback

Cam Jansen and her best friend, Eric, are excited about their class's 100th day of school partyTo celebrate, they're having snacks that start with the letter P: pretzels, popcorn, pineapple juice, and everybody's favorite, pizza. But when the pizza disappears from the kitchen, it's up to Cam and her photographic memory to "click" and solve this delicious mystery