Kaz and Claire are back for a timely mystery in this adorable series by Edgar Award winner Dori Hillestad Butler!Kaz and Claire are called in for another ghostly mystery, and this ghost is always right on time. When Claire's friend tells the young detectives about his five o'clock ghost, Kaz wonders if it could be his own missing brother, Little John. Kaz and Claire search the house up and down, but they can't find any trace of Little John--or any other ghost. Yet when five o'clock comes along, the strange occurrences come back again...

Dori Hillestad Butler's books have appeared on children's choice award lists in 18 different states. Trading Places with Tank Talbott won the Maryland Children's Choice Award in 2007. And The Buddy Files: Case of the Lost Boy won the 2011 Edgar Award for Best Juvenile Mystery. Dori has also been a ghostwriter for the Sweet Valley Twins, Unicorn Club, and Boxcar Children series, and a children's book reviewer for several publications. She's published numerous short stories, plays, and educational materials, and has served as the Iowa Society of Children's Book Writers & Illustrators' Regional Advisor. She grew up in southern Minnesota and now lives in Coralville, Iowa, with her husband, son, dog, and cat. She visits schools and leads writing workshops all over the country.