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What’s Mac B.'s newest top-secret mission? Travel to Iceland and retrieve the ravens that were stolen from the Tower of London...before Britain is ruined. In Iceland, he discovers secret submarines, hungry polar bears, mysterious blueprints...and his old archnemesis! Is the KGB man behind this birdnapping? Can Mac get the ravens to safety? It's time for an epic top-secret smackdown between these two secret agents!

When the Crown Jewels go missing from inside a locked room, Mac's spy skills are put to the test. How did the thief break in? Where did the jewels go? And will Mac be able to solve this locked-room mystery before the thief escapes? This mystery isn't just a whodunit...it's a howdunit! The action in this adventure is nonstop as Mac travels to an ancient Irish castle to solve the mystery. There, he encounters everything from killer king cobras to bizarre ice sculptures...and even a revenge plot dating back hundreds of years! Will you be able to solve the mystery before Mac does?

Eleven-year-old math prodigy Ada Lovelace, daughter of the famous and infamous poet Lord Byron, is a genius. Isolated, awkward and socially inept - but a genius. Mary Godwin, age 14, daughter of radical philosopher William Godwin and feminist writer Mary Wollstonecraft, is a romantic. It has been arranged for Mary and Ada to be tutored by the young man who calls himself Percy B. Snagsby, a nervous fellow who may or may not be a spy.

Cam and her friend Eric are selling chocolate fudge and rice cakes door-to-door for charity. Eric can’t remember what to tell the customers. But Cam has no trouble. She simply looks at the speech and says "click". Then she stores a picture of it in her mind. When Cam sees a woman coming from a yellow house, she knows something is wrong. The woman is wearing a rain coat, but it isn’t raining. She’s wearing dark glasses, but the sun isn’t shining. And the yellow house looks deserted. Will Cam be able to solve the mystery with her amazing photographic memory?

Cam Jansen and her best friend, Eric Shelton, are at a charity function with their mothers to raise money for local firefighters. When the host's pearl necklace goes missing, the luncheon turns into a whodunit, and all the guests are suspects. Can Cam use her photographic memory to identify the culprit?

Mabel lives with her parents in The Mermaid Hotel, by the sea. Mabel likes to keep an eye on the comings and goings of all the guests. Then one day a particularly in-ter-est-ing old lady comes to stay. There is something very suspicious about her, with her growly voice and her heavy trunks and her beady-eyed tortoise. And why does no one know her real name? There can be only one answer, Mabel decides...this guest is a supervillain.

#1 NEW YORK TIMES BESTSELLING SERIES When there’s a friend in need, it’s time to call Theodore Boone—“a terrific character, an everyman kind of kid” (USA Today)! “Edge-of-your-seat drama, sophisticated plotting, and plenty of spunk.”—Chicago Sun-Times Theo has been worried...

While attempting to solve the mystery of a stolen jewel, Seikei, a merchant's son who longs to be a samurai, joins a group of kabuki actors in eighteenth-century Japan...

Young fans of Ernie Cline's Ready Player One will love this classic video game inspired mystery filled with elements of Escape from Mr. Lemoncello's Library and From the Mixed Up Files of Mrs. Basil E. Frankweiler. What if playing video games was prepping you to solve an incredible real-world...

Criminal mastermind Artemis Fowl is back...and so is his cunning enemy, Opal Kobol. At the start of the fourth adventure, Artemis has returned to his unlawful ways. He's in Berlin, perparing to steal a famous impressionist painting from a German bank. He has no idea that his old rival, Opal, has...

Miriam is the youngest in her family, but she’s not as gullible as everybody thinks. Using her superior detective skills, she sets out to find the truth. It’s time for Miriam’s class trip to the zoo, and each student has to write an animal report. Her classmates want to research swans, elephants, and monkeys, but Miriam’s got something way more interesting in mind. Her sister swears that when she went on this trip, she found a secret dragon. Miriam is determined to find it too . . . if it’s even real.

Beginning readers are introduced to the detective mystery genre in these chapter books. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Oliver's boring beach bag is gone! This is a perfect case for Nate the Great and his trusty dog...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Nate, the great detective, depends on his dog, Sludge, to help him solve all of his cases. But Sludge...

Join the world’s greatest detective, Nate the Great, as he solves the mystery of a strange musical note! Perfect for beginning readers and the Common Core, this long-running chapter book series will encourage children to problem-solve with Nate, using logical thinking to solve mysteries! ...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! The sun is shining, the birds are singing, and someone is eating the flowers in Nate the Great's garden. A...

Spread some Christmas cheer with Nate the Great in this holiday adventure! Beginning readers are introduced to the detective mystery genre, perfect for the Common Core. Kids can problem-solve with Nate, using logical thinking to solve mysteries! Annie's dog is unhappy. When Fang is unhappy...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! A giant turkey is on the loose! Nate, the great detective, and his dog, Sludge, hear the news on the radio...

Perfect for beginning readers, this timeless chapter book 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...

Being a brilliant 10-year-old in a competitive eighth grade honors class is a minute-by-minute challenge. Outside school, more challenges abound. When Jack the polar bear’s regular zookeeper is the victim of a mysterious hit-and-run accident, Super Sleuths Sophia and Pedro find themselves investigating his replacement. A replacement whom Jack and the seals fear and distrust.

The Brothers Grimm meets Knives Out in this unexpected, hilarious, and wholly original fantasy-murder-mystery. The Lilac. The bard songs say that she’s the world’s most fearsome bounty hunter. That there’s no criminal she can’t catch, no mystery she can’t solve. None of that is true...