A series of letters reveals the selection of the famous fountain designer, Florence Waters, to design a new sink for the Geyser Creek Middle School cafeteria, her subsequent disappearance, and the efforts of a class of sixth-graders to find her.

In this story told primarily through letters, Principal Russ wants the middle school trees to be trimmed before his administrative evaluation, but the project is interrupted by a town gender war, dueling chefs, student tree protests, and a surprise wedding.

Sent to Camp Happy Harmony to learn how to get along with each other, pairs of brothers and sisters chronicle in letters home how they come to suspect the intentions of the singing family running the camp.

With the impending closure of the post office, the transition to the new communication system VEXT-mail is anything but smooth for the human and paranormal residents of Ghastly, Illinois. Story told mostly through letters.

Twelve-year-old Seymour Hope and his ghostly "mother" Olive go to Scotland to claim a castle inherited from Ignatius Grumply's punster uncle, Ian, but while they tend an aged tortoise and face an unscrupulous developer, Iggie deals with Ian's ghost and an inept insurance agent.

When film producer Moe Block Busters offers to make their book into a movie, Iggy, Olive, and Seymour head to Hollywood where Olive, furious at being written out of the script, enlists the help of a famed femme fatale to scare the despicable director half to death.