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"--

A brilliant Percy Jackson mini adventure plus Horrible Histories Groovy Greeks - a winning combo for World Book Day!The goddess Persephone has summoned Percy, Thalia and Nico to the Underworld in order to retrieve Hades' powerful sword before it falls into the wrong hands. Easier said than done in a world full of evil daimons, ghosts and ghouls. Not to mention Iapetos - brother of the powerful Titan lord, Kronos. This time the young demigods are really up against it - will Percy manage to return the sword before it's too late?Flip the book over for lots more ancient Greek fun with Terry Deary's brilliant Groovy Greeks:It's history with the nasty bits left in! Want to know: Why some groovy Greek girls ran about naked pretending to be bears? Who had the world's first flushing toilet? Why dedicated doctors tasted their patients' ear wax? Discover all the foul facts about the Groovy Greeks - all the gore and more!

This eBook set brings together the first three volumes in the wildly popular Heroes of Olympus series: The Lost Hero, The Son of Neptune, and The Mark of Athena. Longtime fans will want this collection and so will new readers just diving into the series.

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!

Now available for the first time: all five novels from the amazing Heroes of Olympus series, collected in one stunning digital edition. Join the Heroes of Olympus - Percy Jackson and friends - for an adventure like no other. When Jason, Piper and Leo crash-land at Camp Half-Blood, they have no idea what to expect. Apparently this is the only safe place for children of the Greek Gods . . . Despite the monsters roaming the woods and demigods practising archery with flaming arrows and explosives - some things just have to be taken on trust. But now rumours of a terrible curse - and a missing hero - are flying around camp. And it seems Jason, Piper and Leo are the chosen ones to embark on a terrifying new quest And when Percy Jackson wakes up with no memory of his past, it's clear things are only just beginning . . . Heroes of Olympus: The Complete Series includes all three novels in the incredible series from Rick Riordan: The Lost Hero, The Son of Neptune, The Mark of Athena, The House of Hades and The Blood of Olympus

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.