Bent Northrop Memorial Library

When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

When George and Harold use their traveling purple potty to travel to another dimension where the school is nice and the principal, Mr. Krupp, thinks they're funny, they meet up with their evil twins and must face their cleverest enemies ever -- themselves.

A couple who are old friends of Isabel's ask for her help in a rather tricky situation: A successor is being sought for the headmaster position at their alma mater. The board has four final candidates but has received an anonymous letter alleging that one of them has a very serious skeleton in the closet. Could Isabel discreetly look into it? And so she does. What she discovers about all the candidates is surprising, but what she discovers in herself...

"Samantha Casey loves everything about her job as an elementary school librarian on the sunny, historic island of Galveston, Texas--the goofy kids, the stately Victorian building, the butterfly garden. But when the school suddenly loses its beloved principal, it turns out his replacement will be none other than Duncan Carpenter--a former, unrequited crush of Sam's from many years before. When Duncan shows up as her new boss, though, he's nothing like...

When Harold and George turn fourth-grade teacher Ms. Ribble into the evil Wedgie Woman, she gives the wedgie of doom to unsuspecting people who stand in her way--including principal-turned-superhero Captain Underpants.

Not so long ago, George and Harold created the greatest super-hero in the history of their school, and brought him to life by mistake. Meet Captain Underpants. Now the boys have accidently created an army of evil, vicious talking toilets.

"Percival Chen is the headmaster of the most respected English school in Saigon. He is also a bon vivant, a compulsive gambler and an incorrigible womanizer. He is well accustomed to bribing a forever-changing list of government officials in order to maintain the elite status of the Chen Academy. He is fiercely proud of his Chinese heritage, and quick to spot the business opportunities rife in a divided country. He devotedly ignores all news of the...

Only Captain Underpants can stop the three evil space aliens who have invaded Jerome Horwitz Elementary School and turned everyone into lunchroom zombie nerds.