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When Daisy Wells and Hazel Wong set up their very own secret detective agency at Deepdean School for Girls, they struggle to find any truly exciting mysteries to investigate. (Unless you count the case of Lavinia's missing tie. Which they don't.) Then Hazel discovers the Science Mistress, Miss Bell, lying dead in the Gym. She assumes it was a terrible accident - but when she and Daisy return five minutes later, the body has disappeared. Now Hazel and Daisy not only have a murder to solve: they have to prove one happened in the first place.

At only seventeen years old, Ian Kabra is head of the Cahills, the most powerful family in the world. He has presidents on speed dial, generals at his beck and call. Ian knows he's an ideal leader and the only man for the job. There's just one small problem: He's already messed up big time. A Cahill from the past calling himself the Outcast has risen to challenge Ian with an impossible test. The Outcast has re-created four of history's greatest disasters and dared Ian to stop him.

When Oliver asks his friend Nate the Great to find his lost weed, Nate can't say no. This isn' just any weed. It's a Superweed that Oliver bought from Rosamond's Adopt-A-Weed sale. First Nate must figure out where to look for the weed. Together with his trusty dog Sludge, they search for clues in the woods, the park and even the library! But is the biggest clue right under Nate's nose?

Thirteen-year-old Theodore Boone knows every judge, police officer, and court clerk in Strattenburg. He has even helped bring a fugitive to justice. But even a future star lawyer like Theo has to deal with statewide standardized testing. When an anonymous tip leads the school board to investigate a suspicious increase in scores at another local middle school, Theo finds himself thrust in the middle of a cheating scandal. With insider knowledge and his future on the line, Theo must follow his keen instincts to do what’s right in the newest case for clever kid lawyer Theo Boone.

Cam's box camera disappears from the science fair, and valuable gold coins are missing from a coin shop. Can Cam's mental camera help catch the thief?

Perfect for young listeners, this timeless audiobook is a fun introduction to the detective mystery genre. And for Valentine's Day, kids can follow Nate as he unravels the problem, all the while learning about the importance of friendship - with people and dogs! Nate the Great hates mushy stuff. Then he spies a big red paper heart taped to Sludge’s doghouse. Who left Nate’s dog a secret valentine? Nate will solve the case, and then there will be no more mushy stuff. At least that’s what he thinks...

On Max's birthday, he finds a kind of magic mirror in the attic. It can make him invisible. So Max and his friends start playing "now you see me, now you don't." Until Max realizes that he's losing control. Staying invisible a little too long. Having a harder and harder time coming back. Getting invisible is turning into a very dangerous game. The next time Max gets invisible, will it be...forever?

"Are you a gifted child looking for special opportunities?" Dozens of children respond to this peculiar ad in the newspaper and are then put through a series of mind-bending tests, which readers take along with them. Only four children—two boys and two girls—succeed. Their challenge: to go on a secret mission that only the most intelligent and inventive children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

Thanks to the evidence Ben uncovered in his investigation of the Croatoan, the CIA has tracked his nemesis, Murray Hill, to Central America, where they believe he is boarding the world’s biggest cruise ship, The Emperor of the Seas, on its maiden voyage around the world. His mission: Pose as part of a family, with Alexander and Catherine Hale as his parents, Erica as his sister, and his best friend Mike as his brother, to find out what Murray is plotting.

During a spy school game of Capture the Flag, 12-year-old Ben Ripley somehow accidentally shoots a live mortar into the principal's office - and immediately gets himself expelled. Not long after going back to the boring old real world, Ben gets recruited by evil crime organization SPYDER.

Thirteen-year-old Ben Ripley has been caught in the snares of SPYDER more than once and knows well enough to be suspicious of anything that seems too good to be true - despite needing special tutoring in advanced survival techniques. So when Murray Hill finally breaks his silence with an offer to hand over the SPYDER elite, Ben knows there must be something going on. But his hesitation doesn’t stop the assignment.

Nate the Great doesn't especially want to go to a birthday party for Annie's ferocious dog, Fang. But he can't resist a mystery: and when Annie loses her house key and can't get inside to set up the party, Nate and his trusty dog, Sludge, are hot on the trail!

Junie B. is the bestest spyer in the whole world. That's 'cause she has sneaky feet. And her nose doesn't whistle when she breathes. But guess what? Junie B. might be real sneaky. And real peeky. But when she spies on Mrs., she could get into real trouble!

Although Nate the Great and his dog, Sludge, are on vacation, they just can't resist a new case. When his friend Claude's grocery list is lost, Nate sets out to find it before lunch. But lunch draws nearer and the list is still missing. Nate the Great is worried: His reputation is at stake. It looks as if list has vanished - unless Rosamond's strange cat pancakes are somehow at the heart of the mystery.

Katie is looking forward to the peanut butter and jelly sandwich she has for lunch. But after recess, she discovers her sandwich is missing! As she searches for her sandwich, she wonders if one of her classmates is to blame. How will she solve the mystery of her missing sandwich?

Ally has a secret snow pal! She keeps finding little gifts and notes with clues. First it was a bird ornament on her snowman, and then she found a birdhouse! She must follow the clues in the notes to figure out her secret snow pal. Who could it be?

The third, explosive mission in the number one best-selling Alex Rider series. In the third book in the number one best-selling Alex Rider series by Anthony Horowitz, teenage spy Alex faces his most dangerous challenge yet. Teaming up with the CIA, Alex must go to a remote Caribbean island called Skeleton Key, where the insane general Sarov is hatching explosive plans to rewrite history.

Judy Moody is in a mood. A sleuthing, Nancy Drew kind of mood. So what’s a WBMS (world’s best mystery solver) to do? Go find a mystery, that’s what! And she doesn’t have to snoop for long: when Mr. Chips, a beloved crime-dog-in-training, goes missing, Judy Drewdy and her chums, agents Dills Pickle (Frank), Spuds Houdini (Rocky), and James Madagascar (Stink) find themselves smack-dab in the middle of a real-life, scare-your-pants-off whodunit. Was Mr. Chips stolen by dirty dognappers? And why are chocolate-chip cookies disappearing all over town?

There's a murderer on the loose - but that doesn't stop the girls of St. Etheldreda's from attempting to hide the death of their headmistress in this rollicking farce. The students of St. Etheldreda's School for Girls face a bothersome dilemma. Their irascible headmistress, Mrs. Plackett, and her surly brother, Mr. Godding, have been most inconveniently poisoned at Sunday dinner.

A coach driver has been murdered...and it looks like the killer is going to get away with their terrible crime. The only clue is a torn piece of paper in the victim's hand, with a few words written on it. With the help of this single tiny clue, can our legendary sleuth unravel the mystery?