Nature Mysteries

Who is Geronimo Stilton? That's me! I run a newspaper, but my true passion is writing adventure stories. Here in New Mouse City, the capital of Mouse Island, my books are all best sellers! My stories are funny, fa-mouse-ly funny. They are whisker-licking-good tales, and that's a promise.

King, Kayla, and Grandma find a dog who has lost his human family. What does Kayla know? This dog doesn't have a collar or any tags. He can sit, lie down, and shake hands. No one around here knows who he is. What does King know? The dog's family is staying at a campground. Can they figure out who he is and where his family is?

When Josh discovers a nest of young falcons in the forest, he, Dink, and Ruth Rose start visiting every day. But in the morning they find it empty! The kids discover a wounded falcon with its wing feathers clipped, and they know someone's up to no good. Can they figure out what's going on before it's too late to save the falcons?

My troublemaker cousin was trapped in Transratania! And before I could even squeak, my sister, Thea, dragged me along on her rescue mission. Little did we know that Transratania is the land of vampire bats! Holey cheese, bats give me goose bumps!

Into the Deep is your gateway into Earth's last unexplored frontier: the ocean. With 10 captivating chapters that unravel the deep sea's most astonishing, mysterious, and mind-bending phenomena, this book is crafted for curious minds of all ages. Whether you're a budding marine biologist, a lifelong ocean lover, or someone who marvels at the wonders of nature, this journey into the abyss will leave you awestruck.

Rebekah Daniels is just your ordinary spunky 9 year old girl living in the small town of Curtis Bay...EXCEPT she is determined NOT to be ordinary at all! Her small town is filled with mysteries and Rebekah is sure that she, along with her best friend Mouse, will be able to solve every last one of them. Mouse's favorite pet is missing and Rebekah will do almost anything to help him get Magellan back.

With their Very Exciting Spy Technology and their tried-and-true, toilet-based travel techniques, the InvestiGators are undercover and on the case! And on their first mission together, they have not one but two mysteries to solve! Can Mango and Brash uncover the clues, crack their cases, and corral the crooks—or will the criminals wriggle out of their grasp?

Love doesn't come easy. Duped by Drover, mocked by Pete the Barncat, and busted yet again by Sally May, the Head of Ranch Security decides it's time for a break from the grueling daily grind. Heading into the wild outback, Hank goes in search of his true love, the charming Miss Beulah.

Dink, Josh, and Ruth Rose get an urgent call from Mrs. Davis. Her canary is missing! The little bird has vanished without a trace, and he's not the only one. Two other pets are missing. The kids suspect a pet-napper, and now that Ruth Rose's cat, Tiger, has turned up missing too, it's become personal!

Dustin and Ash finally head out on their long-awaited honeymoon adventure in the breathtaking Ozarks National Forest. An adventure that's about to turn deadly. As the newlyweds set their sights on conquering the Wahzhazhe Summit, they cross paths with local Sasquatch expert, Chelsea Buckley, PhD, and her radical theory of cryptids and their elusive nature. Before they know it, the honeymooners find themselves drawn into a bizaare mystery—and a terrifying encounter with a local legend. And when Dustin disappears, Chelsea's theory may hold the only key to his survival. The Ozark Howler is ...

Hank is in real trouble this time. Loper and Sally May's relatives are coming for Christmas dinner, and Sally May has been working to get the entire ranch in order - including preparing for the Christmas feast. Unfortunately, when she discovers that the turkey she bought has met a terrible end, she pins the blame on Hank! Is he the guilty party, or have more sinister forces been at work to frame him for the crime?

A hundred-year mystery lured veteran climber Mark Synnott into an unlikely expedition up Mount Everest during the spring 2019 season that came to be known as “the Year Everest Broke”. What he found was a gripping human story of impassioned characters from around the globe and a mountain that will consume your soul - and your life - if you let it.

The four Aldens like visiting the large old museum owned by their grandfather's friend. But then Jessie sees a huge, scary shadow moving in the room where the dinosaur skeletons are on display. And bones from the enormous Tyrannosaurus rex disappear. They must find the missing bones and solve the mystery before an exhibit is scheduled to open - or there might not be a dinosaur exhibit at all!

Of all the creatures of the deep blue, none is as captivating as the octopus. In Many Things Under a Rock, marine biologist David Scheel investigates four major mysteries about these elusive beings. How can we study an animal with perfect camouflage and secretive habitats? How does a soft and boneless creature defeat sharks and eels, while thriving as a predator of the most heavily armored animals in the sea? How do octopus bodies work? And how does a solitary animal form friendships, entice mates, and outwit rivals?

Sawyer Matthews is a retired and presumed-dead assassin. Ripped from her life of shadows and secrets, she's decided to gamble it all and accept a new chapter in her life - one that may lead to a brighter future. With her first case over and budding relationships with some of her teammates, Sawyer finds herself feeling more secure. Sawyer's found a place on the team, and wants to keep it, no matter the struggles that come from it. It should have been a standard, mundane trip to New York, and the base of operations for the IMPO and the WMC.

Learn how fossils teach us about dinosaurs.

When a mysterious little free library (guarded by a large orange cat) appears overnight in the small town of Martinville, eleven-year-old Evan plucks two weathered books from its shelves, never suspecting that his life is about to change. Evan and his best friend Rafe quickly discover a link between one of the old books and a long-ago event that none of the grown-ups want to talk about. The two boys start asking questions whose answers will transform not only their own futures, but the town itself.

In their next big adventure, S.U.I.T. headquarters is under attack, and Mango and Brash are going undercover and underground disguised as city sewer workers to unclog a sticky situation. But when their search for the criminal Crackerdile backfires, the toilets they travel through get blocked and the InvestiGators take the blame for it! Can Mango and Brash restore their good name and put the real culprit behind bars before the whole city is in deep water?

Seventh-grader Willa is head-over-hooves when she finds a secret note inviting her to Juniper Ranch—a sleepaway camp that’s all about horses. The camp promises trail rides, horseback swims, and “ghorst” stories, plus tons of new horse-girl and (gasp!) horse-boy friends. Even better? Willa’s pals from Oakwood Riding Academy—including her sworn frenemy, Amara—are all coming along for the fun. But when Willa makes a dangerous mistake and a beloved steed goes missing, everyone at Juniper Ranch is suddenly a suspect.

Humphrey has always investigated things, like why Speak-Up-Sayeh was so quiet and Tall-Paul and Small-Paul didn't get along, but this is a true mystery - Mrs. Brisbane is missing! She just didn't show up in Room 26 one morning and no one told Humphrey why. The class has a substitute teacher, called Mr. E., but he's no Mrs. Brisbane.