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The magic tree house has returned, and it's taking Jack and Annie back in time to Alaska, 1925. There they meet Balto, a jet-black Siberian husky destined to save victims of the diphtheria epidemic. But the trail isn't easy, and Balto is going to need Jack and Annie's help!

Disbelief and shock fill eleven-year-old Jake when a stranger grabs his beloved dog. Jake and his twin Ava chase the scruffy teen down their suburban street, but the thief simply vanishes. So … what is this ancient-looking skeleton key Jake finds in the street? Turning it in the air takes the twins—somewhere else!

Ethan seems like a normal ten-year-old, but he has a secret. It’s not that he’s the one who accidentally filled the sunblock container with glue last summer or that he cracked the screen on his sister’s phone and blamed it on their baby brother. (Those things may have happened, but they’ve got nothing on this.) No, Ethan’s secret is that he knows time travel is real—because his future self keeps coming back to visit him. Lucky Ethan, right? Wrong. Because when Ethan’s future self shows up, he tends to bring bad news, and he’s kind of bossy.

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers - people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan’s future self, warning them about an impending disaster that threatens them and everyone they know.

Penguin presents the unabridged, downloadable audiobook edition of Book One in the TimeRiders series, read by Trevor White. Liam O'Connor should have died at sea in 1912. Maddy Carter should have died on a plane in 2010. Sal Vikram should have died in a fire in 2029. Yet moments before death, someone mysteriously appeared and said, "Take my hand..." But Liam, Maddy and Sal aren't rescued. They are recruited by an agency that no one knows exists, with only one purpose - to fix broken history.

Liam O’Connor should have died at sea in 1912. Maddy Carter should have died on a plane in 2010. Sal Vikram should have died in a fire in 2026. But all three have been given a second chance - to work for an agency that no one knows exists. Its purpose: to prevent time travel destroying history.....

Liam O'Connor should have died at sea in 1912. Maddy Carter should have died on a plane in 2010. Sal Vikram should have died in a fire in 2026. But all three have been given a second chance - to work for an agency that no one knows exists. Its purpose: to prevent time travel destroying history... A time wave has struck that alters the entire history of the American Civil War. Abraham Lincoln has followed Liam into the present from 1831 - and now the world is in a dangerous state of limbo.... If the TimeRiders can't return Lincoln to the past, the Civil War will never end.

Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure, in which they meet woolly mammoths, cave people...and fierce sabertooth tigers!

The Magic Tree House whisks Jack and Annie away to the decks of that ill-fated ship, the Titanic. There, they must help two children find their way to a lifeboat, all while they are in danger of becoming victims of that tragic night themselves.

Two exciting Magic Tree House adventures, narrated by author Mary Pope Osborne. A Big Day for Baseball: Batter up! The magic tree house has whisked Jack and Annie back in time to the 1940s. They're in Brooklyn, New York for a very special baseball game. Hurricane Heroes in Texas: Jack and Annie are on a mission! When the magic tree house whisks them back to Galveston, Texas, in 1900, they find out that a big storm is coming.

April Jefferson doesn’t know why she and her friends are traveling back in time. All she knows is that she and Henry and Toad are now in Michigan! They still don’t know where their father is, and they have no idea how to get home. Can they find the missing pieces to the puzzle, or will they be stuck in history forever?

April and Toad were hoping to go home to New York with their father. But History had other ideas. This time, the magical book sends April, Henry, and Toad to Colorado where they'll face their most dangerous threats yet: grizzly bears, lightning-fast trains, and snow. Lots and lots of snow! Can the three kids find the missing pieces to the puzzle... or will they be stuck in history forever?

Where did Professor Abner Jefferson go? Can the kids put history back together, find the pieces of the puzzle, and save Professor Abner or will they be stuck in history forever?

Since Bobby liked history and Carly didn’t, going on an adventure to Ancient Egypt seemed like a safe compromise. They have amazing temples and cool statues, so there should be something for everyone. What Bobby and Carly couldn’t have known is that a disgruntled priest had kidnapped the royal cat, and the Pharaoh’s sister would do anything to get her back. Now Bobby and Carly have to decide if the gratitude of royalty is worth the danger to life and limb if they dare to follow the priest into the ultimate forbidden place: The Valley of the Kings.

Bobby meant for his adventure to be nice and safe…as safe as the Prehistoric World could be, anyway. He would meet small plant eating dinosaurs, while the huge meat eaters stayed in the background. Sadly, his plan went off the rails immediately, when an exploding volcano left a small, injured baby dinosaur in the path of destruction. Now he needs to choose: Does he risk his life to find the baby’s family, or does he abandon the helpless creature and pursue his nice, safe adventure?

April, Henry, and Toad have finally found April and Toad's father, Professor Abner Jefferson. He's hiding in a barn in Boston, Massachusetts, and the Revolutionary War is about to start! But April and Toad can't even think about getting their father home to modern-day New York... yet. Because right now, there's a man named Paul Revere roaming about, and he needs to take a very important ride. Can the three kids find the missing pieces to the puzzle... or will they be stuck in history forever?

Hello! It's me, Ruby Thumb. You might remember me and my dad - we're famous POOPAs. What do you mean you've not heard of us? And you don't know what a POOPA is?! It means we're Protector Of Our Dinosaur Allies - obviously! Me and my dad have loads of amazing adventures in Dinotropolis - an incredible island, full of dinosaurs who live just like us humans do. And when we go there using our special magic Ammonite shell, we turn into dinosaurs too!

Hi, I'm Ruby! And I've got a big secret . . . everyone thinks my dad is an amazing dinosaur expert at our local museum. And he totally is! But he's also . . . a POOPA! And so am I! What's a POOPA? Well, it means he's a Protector Of Our Prehistoric Allies. When me and Dad touch his special, magic ammonite shell, we travel to an incredible island, full of dinosaurs who live just like us humans do. And when we go there, we turn into dinosaurs too!

Neo and Nubia, and their schoolmate, Emeke, are sent back in time on a quest by their grandfather, whose health is declining, to secretly test if they have what it takes to replace him as griots to save all of the human knowledge from being lost. Equipped with their curiosity, clever antics, and ancient wisdom, they will outsmart an evil cabal that wants to erase history. If the trio is successful, they will be selected to become the next generation of griots, our "new guides."

Follow the adventures of Bubbles, the famous travelling cat, as he journeys through time. He is tasked with dangerous missions as he hopes to save Lily Lollipop who has been put under a black magic spell by Morgana: the evil twin sister of Fairie Queen Gloriana, the Fairie Queen. Bubbles also joins a pirate crew, gets shipwrecked, travels to the land of the sabre-tooth tiger, is trapped in the Great Fire of London, and is there when the reign of the mighty dinosaurs comes to an end.