All her camper friends think that Nina is crazy about boys, which she denies--but she does find her friend Emily's brother, Zac, attractive and likes to hang out with him, even though she knows the other girls will tease her.

When twelve-year-old MJ signed up for seven weeks at Camp Mon Mon Lake, she thought her best friend was going too, but now she feels like an extra wheel--things get a little better when another new girl, Zoe, arrives, but then MJ reveals the secret that Zoe is anxious to hide, and MJ suddenly feels very isolated and lonely.

When campers arrive at Camp Dakota, rumors start flying. The Fog Zombie is on the prowl, moaning and creeping through the thick fog that often settles on the lake. At first, the kids don't believe the rumors—until they find mysterious clues leading to the zombie! Can the campers track down the Fog Zombie with their science smarts? Or will it find them first? Look in the back of the book for experiments and more to help you become a science detective...

When Jordan finds a treasure map at Camp Dakota, the hunt for hidden treasure is on! As the campers follow the map, they discover that time has changed some of the landmarks. They'll need to rely on what they know about rocks and changes to Earth's surface to have any chance of success. Will the old drawing still lead them to the treasure? And why is Jordan acting so weird? Look in the back of the book for experiments and more to help you become a...

A thief is on the prowl at Camp Dakota! The campers can't find their favorite things—and they're starting to accuse each other of stealing. The kids set out to find the culprit—but the truth behind the missing stuff may be stranger than anyone expected. Can the campers track down the Cabin Thief? Or will they turn on each other first? Look in the back of the book for experiments and more to help you become a science detective too!