When fifteen-year-old Francis and two younger children lose their way in the wilderness of the Southwest, they face capture at the hands of dangerous men.

"A swashbuckling epic of chivalry, honor, and derring-do, it is set in France during the 1620s and richly populated with romantic heroes, unattainable heroines, kings, queens, cavaliers, and criminals in a whirl of adventure, espionage, conspiracy, murder, vengeance, love, scandal, and suspense. Dumas transforms major and minor historical figures into larger-than-life characters: the brave d'Artagnan, an impetuous young man in pursuit of glory; the...

After the mutant Erasers abduct the youngest member of their group, the "bird kids," who are the result of genetic experimentation, take off in pursuit and find themselves struggling to understand their own origins and purpose.

A young Algerian, Meursault, afflicted with a sort of aimless inertia, becomes embroiled in the petty intrigues of a local pimp and, somewhat inexplicably, ends up killing a man. Once he's imprisoned and eventually brought to trial, his crime, it becomes apparent, is not so much the arguably defensible murder he has committed as it is his deficient character. In the story of an ordinary man who unwittingly gets drawn into a senseless murder on a sun-drenched...

Captain Haley Comet is looking for a few good "mathstronauts" to help her maintain peace in the galaxy. They'll need a special set of skills to deal with the calculating aliens of the planet Calculus. Thrilled readers will want to immerse themselves in this diverting storyline and use their knowledge of fractions, symbols, operations, and more math concepts to avoid an interstellar war. Bright illustrations add excitement to the sci-fi story, while...

Optiman, Multi-Girl, and Mr. Calculus are Prime City's greatest superheroes. They're also mathematical marvels! Join them in this action-packed adventure story, which will put your number skills to the test. In their quest for justice, our heroes will have to overcome Doc Zero's diabolical challenges. Help them on their quest by following cryptic clues, interpreting mathematical maps, cracking number codes, and much more! This awesome book will make...

Daisy and Dale's father, adventurer Darren Deed, has gone missing during a mission to South America. After the kids receive a mysterious package in the mail, clues unravel that might lead to his whereabouts. He's possibly in the mysterious city of El Numero. Daisy and Dale need readers' help, and math skills, as they attempt to rescue their father. This clever volume seamlessly combines an exciting adventure story with need-to-know math concepts and...

Anna Tomical and her friend Hugh must race against time to save world-famous scientist Professor Barrington Bone who is very sick. Join the duo on their microscopic journey as they are transported into Professor Bone's Blood stream. Put your biology skills to the test and help them navigate through the human body in their fight against infection. This book is exciting, educational, and fun for readers aged 7+.

Molly Cool and her friends must navigate to Dr. Smasher's laboratory on Atomic Island to retrieve a priceless, stolen substance called reversium, but they can't do it without you! Use your knowledge of materials and the Earth's elements to solve chemistry conundrums and help the gang on their quest. Learn all about chemical reactions and how to make machines in this action-packed, interactive adventure story!

Wizard detective Anna Kadabra needs help. Jewels have disappeared within the mind-boggling wings of the Mathmagical Museum. While attempting to solve the mystery and locate the jewels, she encounters an assortment of math problems, and a cunning dragon! She'll need the help of readers with an aptitude for math to aid this magical expedition. Young mathematicians will love wielding their math skills in this unique world of fantasy. Bright illustrations...