The wind separates Kaz the ghost from his family and carries him to a library far away. When he meets Claire - a human who can actually see him - they must work together and solve some mysteries to find Kaz's family.

"When a neighbor calls about ghostly noises in her attic, Kaz and Claire agree to investigate. Could that very familiar-looking ghost dog Kaz sees through the attic window be his lost dog, Cosmo? Venturing outside could be dangerous, but Kaz has to find a way to be reunited with Cosmo before he loses him for good."--

Investigating a classmate's claim that he saw a ghost backstage while rehearsing for the school play, Kaz and Claire, harboring suspicions that the ghost may be Kaz's mom, discover compelling evidence of otherworldly activities.

"Kaz, Claire, and Little John are off to Seattle, where a new mystery awaits. The city library is planning a Halloween party, but a series of strange ghostly happenings has scared away all the kids. Now Claire and the ghosts must go underneath the city to find out who is trying to stop the party--and why"--Page 4 of cover.

Fizz, an undead goldfish that was flushed down the toilet, pesters Joe into helping him discover who his killer was before any of his fellow fish meet a similar fate.

A group of girls in Claires town have noticed strange sights and sounds coming from the tree house where their club meets. Is it a rival boys club trying to scare them away? Or is it a ghost? The girls ask Claire to tackle the mystery--and Kaz hopes to finally find the rest of his missing family members!

Sam Graves discovers that his elementary school is alive and plotting against the students, and, as hall monitor, it is his job to protect them--but he will need some help from his friends.

Iggy is delighted when Ada Twist's Aunt Bernice inherits a mansion featuring his favorite architectural periods, but unless the Questioneers can find its missing antiques, the house may be lost forever. Includes information about Art Deco and Art Nouveau, facts about unusual cats, a recipe for ice cream, and a biographical note on Ida B. Wells

When Stink's parents win an aquarium sleepover, he and his two friends enjoy a scavenger hunt before trying to fall asleep while worrying about the frankensquid on the loose.

Desmond and best friend Andres attend the town's birthday celebration with a petting farm, bumper cars, cotton candy machines, and ghosts, but mostly this Kersville Town Clown Extravaganza is full of creepy clowns of all kinds.