As mysterious circumstances bring Giuseppe, Frederick, and Hannah together, their lives soon interlock like the turning gears in a clock and they realize that each one holds a key to solving the others' mysteries.
While running a spy network from their elementary school, five unpopular misfits combine their talents and use cutting-edge gadgetry to fight evil around the world.
Book 1 in the NERDS series.
Nick and his friend Marta decide to investigate when a mysterious fire starts near a Florida wildlife preserve and an unpopular teacher goes missing.
When therapy dog Buddy attends the fourth grade sleepover in the school's library, he solves the mystery of the school ghost.
Book 6 in the Buddy Files series.
Ten-year-old Saxby Smart, the best detective in the world--for his age--investigates three cases while sharing clues with the reader so they can help solve the mysteries .
When Ted and Kat's cousin Salim disappears from the London Eye ferris wheel, the two siblings must work together--Ted with his brain that is "wired differently" and impatient Kat--to try to solve the mystery of what happened to Salim.
Thirteen-year-old aspiring lawyer Theodore Boone is falsely accused in a robbery and must fight to clear his name.
Book 3 in the Theodore Boone series.
Also available as an audiobook.
A hard-bitten former search-and-rescue dog helps solve a complicated missing chicken case.
Eleven-year-old Benny Kaminsky leads a rag-tag gang of neighborhood children as they use improbable disguises and crazy ruses while investigating such crimes as counterfeiting and stolen silver in 1894 London.
Racing against the clock, shy middle-school student Lily and her best friends, Katie and Jasper, must foil the plot of her father's conniving boss to conquer the world using an army of whales.
Thirteen-year-old Lemony Snicket begins his apprenticeship with S. Theodora Markson of the secretive V.F.D. in the tiny dot of a town called Stain'd By The Sea, where he helps investigate the theft of a statue.
Book 1 in All the wrong questions series.
Also available as an audiobook.
When a mummy disappears from the local history museum while Cass and her friends Max-Ernest and Yo-Yoji are there, they try to solve the case in order to clear their names and, they hope, discover the Secret they have been seeking.
Book 5 in the Secret series.