A secret teacher party is happening in the library, but who is the party for? Harry and Doug plan to find out, but when they discover Harry's pet cat, Googer, skulking around their classroom, they have to catch him before anyone else does! They chase The Goog all over school—even into places students (and cats) aren't allowed. Will the boys capture The Goog without being caught themselves? Or will Harry's cat get him into the most horrible trouble ever?

A secret teacher party is happening in the library, but who is the party for? Harry and Doug plan to find out, but when they discover Harry's pet cat, Googer, skulking around their classroom, they have to catch him before anyone else does! They chase The Goog all over school—even into places students (and cats) aren't allowed. Will the boys capture The Goog without being caught themselves? Or will Harry's cat get him into the most horrible trouble ever?

In the 34th Horrible Harry book, Mary's plans for a perfect birthday party go horribly wrong--can her friends save the day? Mary is always neat and organized, while Harry is horribly messy. But even Mary’s carefully planned schedule can’t help when things go wrong at her own birthday party. The party is supposed to start with the kids from Room 3B taking an exciting train ride, but when their train is delayed not one . . . not two . . . but three times, Mary’s plan is completely ruined! She thinks the only thing that can make her feel better is cup after cup of sugary Island Punch—even after her mom tells her to stop. But what Mary doesn’t know is that Harry has his own wacky ideas for saving Mary’s big day. Can the kids still have fun even when nothing’s going the way it’s supposed to, or will this be the most horrible birthday ever? Praise for the Horrible Harry series: "Room 2B is every child's dream...This is one school story which rates an A+."—School Library Journal (Horrible Harry and the Green Slime) "Another perfect chapter book for transitional readers."—School Library Journal (Horrible Harry and the Drop of Doom) "Kline has an exceptional talent for capturing the language, humor, and group dynamics of a primary grade classroom... An attractive read for children just beginning to tackle novel length fiction."—School Library Journal (Song Lee in Room 2B)

Another uproarious caper in the Horrible Harry series, and this time Harry's not the one breaking the rules! Everyone in Room 3B knows that if Miss Mackle sees you playing with toys at your desk, she'll confiscate them for her June Box. So when a substitute teacher catches good girl Song Lee with a pink origami pig, into the June Box it goes. The problem is that this origami was to be a birthday present for Song Lee's grandmother. So Song Lee does the unthinkable: she breaks into the June Box to free her pig. Now Harry, Doug, and the rest of the kids have to work together--before they all wind up in horrible trouble!

When Sid, his annoying third-grade classmate, ruins Song Lee's origami praying mantis, Horrible Harry plots triple revenge on the troublemaker.

Doug discovers that though being Harry's best friend in Miss Mackle's second grade class isn't always easy, as Harry likes to do horrible things, it is often a lot of fun.