When twelve-year-old aspiring detective Myrtle Hardcastle learns her neighor in quiet Swinburne, England, a breeder of rare flowers, has died she is certain it was murder and that she must find the killer.

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.

This book was never meant to exist. No one needs to know the details. Just know this: there's a Merry, a Larry, a missing tooth, and a teachers' strike that is crippling Timmy Failure s academic future. Worst of all, Timmy is banned from detective work. It's a conspiracy of buffoons. He recorded everything in his private notebook, but then the manuscript was stolen. If this book gets out, he will be grounded for life. Or maybe longer. And will Timmy's...

On an island off the south coast of Victorian England, fourteen-year-old Faith investigates the mysterious death of her father, who was involved in a scandal, and discovers a tree that feeds upon lies and gives those who eat its fruit visions of truth.

Team Spy Gear tries to track down a computer hacker who has made a computer which is a billion times faster than any other in existence.

"Twelve-year-old Truly Lovejoy's family moves to a small town to take over a bookstore. Soon, she has to solve two mysteries involving a missing book and an undelivered letter"--Provided by publisher.

"Moldy mozzarella! It was only a few days before Halloween when all of the pumpkins in New Mouse City disappeared. A thief was on the loose, and there was only one person I could count on to help me solve this peculiar mystery--my detective friend Hercule Poirat. But would we be able to figure out what was going on in time to save Halloween?" -- p. [4] of cover.

Twelve-year-old Teddy Fitzroy is the prime suspect when FunJungle's newly-acquired koala goes missing, thanks to a prank staged by middle school bully Vance Jessup.

Twins Mia and Maddie and their sidekick little sister, LuLu, embark on adventure and a little bit of mystery solving while visiting Watery World in San Diego.

While visiting Chicago, twins Ashley and Bryce catch up with old friends, visit the house where they grew up, see many reminders of their deceased father, and help search for their best friends' uncle, who disappeared days before his wedding.