Four seventh-grade girls follow a trail of cryptic clues to locate a rare violin, catch the person sneaking into St. Veronica's School for late-night cleaning and redecorating, and outsmart a conniving classmate.
Frank and Joe set out to discover who is hurting the contestants on a popular TV reality series only to stumble upon a shocking murder on the "Mad House" set.
Frank and Joe find themselves in the middle of a stolen identity case when Joy Gallagher claims another girl is now living her life, with her parents, and in her body.
Fourth-grader and local reporter Lindy investigates the whereabouts of a silver dollar that has supposedly gone missing from her young neighbor's bank.
Twelve-year-old twins Anny and Scout Bradford, and their neighbor Eric Larson, spending their vacation on the Navajo Nation, join with their friend Ben to track down a group of criminals who are illegally searching on Navajo land for the legendary Lost Treasure of the Golden Sun.
A graphic novel in which Frank and Joe Hardy, Callie, and Iola must recover the Ocean of Osyria, an art treasure taken from a Middle Eastern museum, in order to save their best friend, Chet, who has been accused of stealing it.
While having a picnic on the docks, animal detectives Bunny and Jack meet a dog whose one and only lawn chair is missing, and they set out to solve the case.
In searching for a lost parrot who recites Shakespeare with a stutter, Jupiter Jones' firm of young detectives becomes involved with a missing masterpiece.