When Rebecca attends summer camp in the country because of the spreading polio epidemic in New York City, she is troubled by a bully in her tent and another fellow camper who is strangely secretive.

When mysterious incidents start wreaking havoc throughout Camp Jupiter, suspicion falls on the Fourth Cohort's newest probatio. But is she really to blame? Find out the truth by delving into the pages of her personal journal.

"During Rachel and Kirsty's first night at Camp Stargaze, they notice that the sunset is ... green! Can they help Ava the Sunset Fairy set things right?"--Cover verso.

Carole, Lisa, and Stevie spend two quite surprising weeks at a Virginia riding camp--and compete in a genuine horse show.

At Camp Whatsitooya, twins Joules and Kevin and new friend Nelson face off against large, rabbit-like creatures from the Mallow Galaxy who thrive on sugar, but are not above hypnotizing and eating human campers.

Young alien agent Zack, surly Galactic Patrol Cadet Vraj, and shy human camper Opal team up to find some Duthwi eggs before they hatch and cause a planetwide disaster, while the Gnairt who were smuggling the eggs try to retrieve them.

While trying to fit in at summer camp, Nina discovers a pair of endangered birds getting ready to lay eggs in the marsh behind one of the cabins and hatches a secret plan to help them.

Although his best friend Rex is excited about going to camp, Pinky is afraid of leaving home.

"Thirteen-year-old Clay, a boy who no longer believes in magic, tags graffiti on his classroom wall and, as punishment, is sent to a camp for wayward kids located on a volcanic island, where eccentric campmates abound, a ghost walks among the abandoned ruins of a mansion, and a dangerous force threatens to erupt with bad magic"--

Science camp brings pranks, fun, rivalries, and a new and somewhat unsettling view of a longtime best friend.