Wally Hatford dreams of long lazy days far away from school and Caroline Malloy. But Wally, the best speller among the Hatford brothers, gets roped into helping them with a summer newspaper project that will earn the twins school credit.
What does that get Wally? When he hears scratching noises coming from Oldakers’ bookstore cellar, Mr. Oldaker trusts him to keep a secret that could turn into a scoop for their newspaper. Wally worries that...

The Hatford boys' New Year's resolution is "the girls can stay . . . but only if they play by our rules." Their mother insists that they "treat those girls as though they were your sisters." Okay, but somehow the boys' interpretation owes more to sibling rivalry than to brotherly love. The one weak link is young Peter, who doesn't understand the rivalry, openly likes the girls, and sees nothing wrong with sitting in their kitchen eating homemade cookies...

It’s spring break and the only assignment Wally Hatford and Caroline Malloy have is to do something that they have never done before. Wally’s sure that will be a cinch once he hears the great news about the mighty Benson brothers coming to stay for vacation. It will be nonstop action all the way. For starters, the nine Benson and Hatford boys plan on scaring the three Malloy sisters silly by convincing them that their house is haunted....

The race is on! The Hatford boys and the Malloy girls are ready to outdo one another again. Eddie is the first girl to ever try out for the school baseball team. Now she and Jake are competing for the same position, while Caroline and Wally compete for class spelling bee champ. Wally is itching to win, but Caroline the show-off plans to be number one.
As if that wasn’t enough, the kids decide to race bottles down the rising Buckman River...

This fourth book about the Hatford brothers and the Malloy sisters begins shortly before Christmas, three months after the Malloys move to Buckman, WV. As the holiday season approaches, the boys and girls continue to play pranks on one another and begin to learn the consequences of their actions. Caroline Malloy and Wally Hatford are partners for their fourth-grade December project and discover that, instead of annoying one another, they need to learn...

As Halloween approaches, the three Malloy sisters find themselves continually trying to get even with the four Hatford brothers, who have been playing tricks on them since the Malloys moved from Ohio to West Virginia.