Cam Jansen and her friend Eric are going ice skating! They put their shoes in a locker, and Eric puts the key in a pocket. "I won't lose it, ' he tells his father. But he does. Can Cam use her amazing memory to find the lost locker key?.

Eric's Grandma Minnie and Grandpa Max keep hearing someone knock at their door, night and day, but find no one there, so Cam tries to solve the mystery using her amazing memory.

When Cam, her friend Eric, and her father stop for pizza while they are at the mall, Cam must rely on her photographic memory to locate her missing jacket.

This time Cam Jansen relies on her hearing rather than her photographic memory to find a missing classmate.

To celebrate their 100th day of school, Cam and Eric's class party will have snacks that start with "P"--pretzels, popcorn, pineapple juice, and pizza. But when the pizza disappears from the kitchen, it's up to Cam and her photographic memory to solve this delicious mystery.

When Cam Jansen, her father, and her friend Eric go to the library, Cam finds a mystery to read. But soon, she has a mystery to solve. Her father's shopping list has disappeared. Cam decides to use her amazing skills to investigate, and with a click, she puts her photographic memory into action. Where was the list seen last? And where can it possibly be?