The boys enlist the aid of a neighborhood girl to track down a ghost that keeps messing up the clubhouse.

When a broken ankle forces Marion to withdraw from the horse show, she finds a way to stay active by helping her friends at the Critter Club animal shelter find homes for a litter of kittens.

"Five friends are ready for their school's Olympics field day. But not everyone wants to play fair someone is trying to ruin the events! Can the kids in the Most Valuable Player club solve the mystery, save the Olympics, and take home the gold? Includes sports facts"--

Members of the Critter Club are all excited about their summer plans until Liz learns that, instead of taking an art class, she will have to be in summer school to improve her math skills, but a fun teacher, a classroom pet, support from her friends, and advice from her brother might get her through.

"Liz can't wait to spend the weekend with the Critter Club at her house on Lake Marigold, but when all the activities go horribly wrong, Liz worries the weekend will be a disaster"--

"Amelia Bedelia loves her school. Her whole class gets along--except when it rains. Then they split into two groups--the Puddle Jumpers and the Puddle Stompers. Both clubs ask Amelia Bedelia to join, but she doesn't want to choose between her friends. Luckily, Amelia Bedelia finds a solution that makes a big splash with everyone"--

"Zach's mom has a new patient--a giant dog named Maxi who has been helping her owner train for a marathon. Maxi's knees can't handle all that running and now she needs an operation. Time for the kids in the Pet Rescue Club to help! Together they find a way to raise money for Maxi's surgery and come up with a great way for Maxi to find the perfect new career!"--Back cover.

Mrs. Bell challenges her science students to invent their own robots but when they start malfunctioning it becomes up to the DATA Set to deprogram the machines before an army of robots take over the school.