David A Adler

When Aunt Molly takes Cam and her friend Eric to the circus, their box of caramel popcorn mysteriously disappears.

Cam Jansen uses her photographic memory at the school Green Fair to solve a mystery involving a missing electric car.

A brief biography of the African American scientist who overcame tremendous hardship to make unusual and important discoveries in the field of agriculture.

A biography of the man who, after escaping slavery, became an orator, writer, and leader in the abolitionist movement in the nineteenth century.

Cam helps her friend Eric when he misplaces his permission slip to go on the school field trip.

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 a baseball game is stopped because of a lost ball, Cam uses her photographic memory to find the ball.

Cam uses her photographic memory and her brain to solve two mysteries at the beach, involving a missing mother and a missing set of papers.

When Cam and her father go to a talent show at the local senior center, Cam's help is needed to find out who stole a wedding cake from the delivery truck.