Butler, Dori Hillestad

Now that Kaz can finally pass through walls without feeling all "skizzy," he can go explore Beckett's secret room at the back of the library. What he finds there is a mystery he never expected!.

When the fire station's new dog, Sparky, finds a ghost at the door of the TV room, Kaz and Claire investigate, hoping the ghost may be one of Kaz's relatives.

"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"--Provided by publisher.

"Kaz are Claire are on the case again--this time, they're looking for Kaz's long-lost uncle! Their search takes them to a bakery and a movie theater. Along the way, they meet another kid ghost detective. Will Kaz and Claire be able to figure out what's going on?"--Publisher.

King and Kayla try to figure out where King's missing ball went.

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 strange noises are heard in the tree house where their club meets, Claire and Kaz wonder if a rival club is causing problems in order to scare them away, or if they are coming from the ghosts of one of Kaz's departed ancestors.

When a mysterious letter written in code arrives at King's house for his human, Kayla, he follows the trail of the person who left it.

King's human, Kayla, has baked some treats for a friend's new puppy, Thor, but some go missing and it is up to King to find the culprit.

Kaz, who is an ordinary ghost, and Claire investigate a noise in an attic that might be Kaz's ghost dog, Cosmo.