Hillestad Butler Dori: The Haunted Library: The Ghost at the Fire Station 6

With a lot of searching and a lot of luck, Kaz has found his dog Cosmo, his little brother Little John, his grandmom, and his grandpops. But what about his parents? Or his big brother Finn? Will he ever see them again? Kaz wants to keep looking for his family, but when Claire hears about a ghost at the fire station, Kaz knows it's a case for C & K Ghost Detectives!