Children Chapter Mystery

High school sleuths P.C. Hawke and Mackenzie Riggs quickly regret their decision to take a difficult calculus class from a tough instructor at Columbia University. But even though she's mean, Professor Dunaway certainly seems an unlikely candidate for murder. Though there are plenty of suspects, a lot of things about this case just don't add up.

Pulitzer Prize winner Paul Zindel delights even the most reluctant listeners with his thrilling P.C. Hawke Mysteries. Everyone is upset when P.C.'s junior class trip ends with classmate Timmy Warner plunging to his death over a 300-foot waterfall. So when Timmy's mom exhibits some strange behavior at the funeral, P.C. and his friend Mackenzie just have to investigate. What they don't expect is that the trail of clues will lead them to Los Angeles-and to a surfer who's a dead ringer for their dead classmate!

This third entry from the much-loved Nancy Drew and the Clue Crew series finds the clever detective and her friends investigating a Houdini of a pony. When a new petting zoo opens in town, Buttons becomes the star by escaping every night and showing up on someone else’s lawn to eat the flowers. Nancy quickly jumps on the case—because even though she’d love to see Buttons on her lawn one morning, it’s more important to keep him safe at the zoo.

This collection includes K is for Kidnapped, L Is for Lucky, M Is for Mummy, and N Is for Nugget. Someone has kidnapped the king and queen of Socotra. For safety's sake, their son is staying with Dink until they are safe. But then the prince is kidnapped, too! Can Dink, Josh, and Ruth Rose unmask the royals' enemies before it's too late? Or is the royal family of Socotra gone forever?

For budding amateur sleuths, Nancy Drew and her Clue Crew pals George and Bess are the ultimate role models. Winter has come to River Heights, and the girls are busy making a snowman—affectionately named Sherlock. They are distracted, however, by one of their classmates. It seems Deirdre has changed her name to Madame Chocolata, and she’s reading marshmallows to tell fortunes.

Welcome to summer camp for detectives! The kids can’t wait to spend a week following clues and learning about the science of crime-solving. Soon all the campers are working on a mystery. But while Dink, Josh, and Ruth Rose are figuring out their part of the puzzle, they stumble onto something suspicious. Could a real crime be happening at detective camp?

I is for Island.... It’s picnic time! Dink, Josh, and Ruth Rose pack up a basket and wade out to Squall Island. Right away, they find a 100-dollar bill in the sand! But when they come back the next day, the entire island has mysteriously disappeared. What is the secret of Squall Island?

Third grader and inventor extraordinaire Ada Lace likes nothing more than to tinker with mechanics like her robot, George. Her latest project is to fix up a ham radio, something that she could use to contact people on this planet...and beyond. The only problem is that she just can't get it to work properly. During a sleepover, Ada's best friend, Nina, hears something strange coming from the radio in the middle of the night. A distant voice says, "Release the swarm!" convincing Nina that aliens are about to invade planet Earth.

A lovable dog helps his human girl solve a mystery. Thor has been accused of wrecking Mr. Gary’s yard, knocking over trash cans, eating the vegetables out of the garden, and pooping. But King and Kayla, with the help of some other neighbors, are determined to clear his name, using a wide variety of familiar and new detecting skills. With simple, straightforward language and great verbal and visual humor, the King & Kayla series from Geisel Honor Award-winning team Dori Hillestad Butler and Nancy Meyers is perfect for newly independent readers.

Ada Lace - third-grade scientist and inventor extraordinaire - has discovered something awful: Her neighbor's beloved Yorkie has been dognapped! With the assistance of a quirky neighbor named Nina (who is convinced an alien took the doggie) and her ever-growing collection of gadgets, Ada sets out to find the wrongdoer. As their investigation becomes more and more mysterious, Ada and Nina grow closer, proving that opposites do in fact attract.

They’re explosive and invisible. They’re extinct and never-ending. What are they? Science mysteries, of course! Get ready to crack the cases and the real science info wide open. You might need your goggles for this one.

They’re furry and funny. They’re tracked and tricky. What are they? Animal mysteries, of course! Get ready to crack the cases and the real animal info wide open. You might need your camouflage for this one.

Dink, Josh, and Ruth Rose are headed to the Big Apple! They plan to spend time with Ruth Rose's grandmother in Brooklyn. But their plans are foiled when a famous vase is stolen from the Greenwood Cemetery. And all evidence points to Ruth Rose's grandmother as the culprit! Is she really a criminal? It's up to Dink, Josh, and Ruth Rose to clear her name.

In Robo-Dodo Rumble, Koko Dodo's cookie shop is facing some stiff competition from an evil robotic dodo (a Robo Dodo). The Robo Dodo is selling its cookies for only a penny! Why? To put Koko's shop out of business! And if that weren't bad enough, a giant sea monster starts destroying the town! But don't worry. Didi Dodo has a daring plan.

Popular children's author Patrick Carman has captured the imaginations of children everywhere with his Elliot's Park series. In Haunted Hike, playful squirrels Elliot, Chip, Twitch, and all their furry friends are dressed in Halloween costumes and ready for a squirrel hike in Camp Canyon. But the adventure takes a scary turn when the squirrels see a ghost along the way! So the curious bunch sets out to find out whether the ghost is real or just a hoax.

Underneath the steps leading down to Eric's basement is a hidden storage place. It's dusty and old, nothing special at all. But when Eric, Julie, and Neal all huddle inside the gray room together, something unbelievable happens. A glittering light and then a rainbow-colored staircase appear. As the kids take their very first step down into the mysterious land of Droon, they know that only magic and adventure await them!

Boy hero Tom, Hugo the Averagely Spooky Ghost, and famed ghoul hunter Hetty Hyssop have formed an agency dedicated to dealing with difficult apparitions. No spook can defeat them, until their too close encounter with a Gruesome Invincible Lightning Ghost (or "GILIG" in ghosthunter-speak).

Iggy Peck is an architect at his very core: When he's not making houses out of food, his head is up in the clouds, dreaming of design. So he's totally blown away when Ada Twist's Aunt Bernice inherits an old house from ice cream mogul Herbert Sherbert that is filled with countless rooms from all his favorite architectural periods. But something's not quite right....

Someone, or something, is draining all of Henry's books of their ink. A trail of clues leads the young boy to a tomb... and an ancient vampire!

She is the best girl detective in all of Curtis Bay, and this summer, she - along with her best friend and cousin - are going away to summer camp! She's excited about swimming, hiking, campfires and meeting new friends. And when the camp counselors warn the kids to stay away from a certain shed, of course, Rebekah can not possibly help being curious about what's inside. She won't be able to rest until she knows the truth. Rebekah is determined to solve every last mystery at summer camp, starting with the strange sounds coming from one very secret shed.