At the conclusion of The Mark of Athena, Annabeth and Percy tumble into a pit leading straight to the Underworld. The other five demigods have to put aside their grief and follow Percy's instructions to find the mortal side of the Doors of Death. If they can fight their way through the Gaea's forces, and Percy and Annabeth can survive the House of Hades, then the Seven will be able to seal the Doors from both sides and prevent the giants from raising Gaea. But, Leo wonders, if the Doors are sealed, how will Percy and Annabeth be able to escape? They have no choice. If the demigods don't succeed, Gaea's armies will never die. They have no time. In about a month, the Romans will march on Camp Half-Blood. The stakes are higher than ever in this adventure that dives into the depths of Tartarus.

"Equipped with a camera and determination, an adventurous little girl tries to track down an elusive red fox, which proves more difficult than she thought"--

Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!! When Jack and Annie got back from their adventure in Magic Tree House Merlin Mission #11: Dark Day in the Deep Sea, they had lots of questions. How big is a giant squid? What is a dragonfish? How do deep-sea creatures find food when it’s so dark down there? What do scientists think mythical sea monsters might really be? Find out the answers to these questions and more as Jack and Annie track the facts. Filled with up-to-date information, photos, illustrations, and fun tidbits from Jack and Annie, the Magic Tree House Fact Trackers are the perfect way for kids to find out more about the topics they discovered in their favorite Magic Tree House adventures. And teachers can use Fact Trackers alongside their Magic Tree House fiction companions to meet common core text pairing needs. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!

There's a monster in Dave's basement! His name is Howard and he's very hungry. Howard invites Dave to dinner. But will Dave eat dinner or BE dinner? The thought makes Dave shake a little bit, shake a little bit, shake, shake, shake, shake, shake. Has Dave made a big mistake? This heartwarming story about friendship and first impressions began as a song. The music and lyrics are included in the book, and a QR code invites readers to join the author in a rousing rendition of the clever song that gets kids up and shake-shake-shaking!

From the author of the New York Times bestselling Jedi Academy books comes a hilarious graphic novel series about two young cave kids living 40,000 years ago. “Lucy & Andy are Stone Age rock stars! I loved this book!” —Lincoln Peirce, author of the Big Nate series Lucy and Andy are a sister and brother who get into trouble much like any sister and brother. Only difference? Lucy and Andy live in the Stone Age! Discover their laugh-out-loud adventures as the Paleo pair take on a wandering baby sibling, bossy teens, cave paintings, and a mammoth hunt. But what will happen when they encounter a group of humans? Includes extra information about Neanderthal life that's sure to appeal to future paleontologists and science phobes alike! And don't miss Lucy and Andy's next outing, Lucy & Andy Neanderthal: The Stone Cold Age -- coming soon! A New York City Public Library Best 50 Books for Kids 2016! A Chicago Public Library Best of the Best 2016! "Jeffrey Brown returns from a galaxy far, far away to bring us a whole new slew of kid-friendly characters! Just beware of mammoth dung!" —Keith Knight, author of Jake the Fake and The Knight Life Every kid will love to go back in time with LUCY & ANDY!" —Judd Winick, author of Hilo: The Boy Who Saved the World

The adventure begins here - the first novels from the five groundbreaking series by Rick Riordan! Starting with THE LIGHTNING THIEF, the book that launched millions of readers into the amazing world of Greek mythology, to THE HIDDEN ORACLE, the story that gives a new look to Roman myths -- not to mention the god, Apollo -- with visits to Egypt and Valhalla in between. This beautifully packaged boxed set will thrill fans who want to relive the adventure and magic again, and will open the door to new readers of Riordan's epic storytelling.