
by Jarrett J Krosoczka
Ages 9 - 12
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Platypus police squad members Rick Zengo, a hotshot rookie, and Corey O'Malley, a hard-nosed old-timer tackle their first case involving a missing schoolteacher and a duffle bag filled with illegal fish.
by Chris Grabenstein
Ages 9 - 12
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Riley Mack and his friends are back in action--making trouble in the name of justice--this time to stop a pollution cover-up and protect one of their own from talent-show sabotage.
by John Grisham
Age 9-12
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Aspiring lawyer Theodore Boone takes the stand to protect his political and environmental freedoms in the fourth installment of the series.
by Stuart Gibbs
Ages 9 - 12
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Twelve-year-old Ben Ripley leaves his public middle school to attend the CIA's highly secretive Espionage Academy, which everyone is told is an elite science school.
by Doreen Cronin
Ages 7 - 9
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A former search-and-rescue dog, J. J. Tully is having a hard time enjoying his retirement. With a coop full of chickens to protect and a possum to keep out, he has his hands full.
by Helen Phillips
Ages 9 - 12
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Sisters Madeline and Ruby travel to a Central American jungle to help find their missing father, a renowned bird watcher, only to discover a nefarious plot that puts their lives in danger.
by Elizabeth Cody Kimmel
Ages 9 - 12
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With her beagle Henry and her new friend Quin, twelve-year-old Tee is determined to solve the mystery of "the Shadow", the ghostly animal that is believed to haunt the Alaskan wilderness near her new home in Nome.
by Wendelin Van Draanen
Ages 9 - 12
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When Justice Jack, a self-appointed superhero, begins trying to track down the missing Mrs. Wedgewod and some stolen cash, the older folks in Santa Martina are delighted but Sammy knows it will be up to her to really solve the mystery.
by Kate Feiffer
Ages 9 - 12
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An eleven-year-old aspiring handwriting analyst, a solitary boy, and a talking pigeon solve the mystery of Nicky's missing grandmother.
by Lauren Child
Ages 9 - 12
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Ruby Redfort is a genius code-cracker, a daring detective, and a gadget-laden special agent who just happens to be a 13-year-old girl. She and her slick side-kick butler, Hitch, foil crimes and get into loads of scrapes with evil villains, but they're always ice-cool in a crisis.
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