A brand-new young chapter book series from Edgar Award winner Dori Hillestad Butler! After successfully solving the mystery of the ghost in the library, Kaz and Claire land the first case for their detective agency—a haunted attic in a neighbor’s home! With a little help from Grannie, Kaz and Claire discover that what appeared to be something spooky has a much simpler explanation.

"My name is King. I am a dog. I am also a detective. King has a very big mystery to solve. His family is missing, and he's been put in the P-O-U-N-D. Why doesn't his beloved human (Kayla) come to get him? When King is adopted by Connor and his mom, things get more confusing. The new family calls him Buddy! And just as Connor and Buddy start to get acquainted, Connor disappears! Buddy (aka King) has big problems to solve, but with some help from his friend Mouse (a very large dog) and the mysterious cat with no name, he shows what a smart, brave dog can do. Mystery fans and dog lovers will be swept up in Dori Hillestad Butler's funny, satisfying story...and left eager for Buddy's next adventure.

Quinquennial supplements,1950/1954-1979/1983, compiled by Estelle A. Fidell, and others, published 1956-1984.