Nature Mysteries

A lovable dog helps his human girl solve a mystery. Kayla and Mason both got mysterious letters, written in code. What does Kayla know? The same person left both letters. It's someone she and Mason both know. The two letters are the same, except for the second word. What does King know? Jillian left the letters. What do the letters say?

The Boxcar Children are spending their vacation on a farm. They learn to do everything from milking cows and making homemade jam to raising a barn. Then one day they spot a beautiful horse locked up in a stable. Who is the mystery horse? And why is it hidden?

The Chicken Squad is back for its sixth (mis)adventure, and this time, there's a headless bear on the loose, and the Chicken Squad's beloved Barbara has gone missing!

In a blossoming garden located far outside all worlds, a group of aging Greek gods have gathered to discuss the nature of existence, the mystery of mind, and whether there is a transcendent God from whom all things come. Turning to Eros, Psyche asks, "Do you see this flower, my love?"

When a woman mysteriously vanishes, leaving her car behind in a supermarket parking lot, injured police officer, Sloan Cooper, determines to keep herself busy looking for any similar cases. She finds them, spread across three states. Men and women, old and young―the missing seem to have nothing in common. But the abductions keep on coming. It will take every ounce of Sloan's endurance to get to the dark heart of this bizarre case―and she's willing to risk her life again if that's what it takes...

Rex Dexter is cursed...with brains...and daring...and more than his fair share of devilish good looks. But also with an actual curse: dead animals keep showing up in his bedroom, wanting him to solve their murders. After successfully sleuthing a series of endangered animal assassinations, Rex is pretty sure he's home free, spiritually speaking. But that's when he finds a 2,000-pound narwhal in his beanbag chair. And this tough guy is dead. And super crabby about it.

Our fluffy, fearless young detectives are back out sleuthing, because there's a new cage in the yard, and the Chicken Squad is determined to figure out just who this new addition is. Because whatever it is, it's definitely up to no good. So, equipped with the latest surveillance gear - which apparently includes copious amounts of marshmallows - the chicks venture into the wild to get answers. Let's just hope they can beat that giant rain cloud that's closing in - because everyone knows that chickens can't swim!

A lovable dog helps his human girl solve a mystery. King and Kayla are playing fetch with their friends, Jillian and Thor. Jillian throws King’s favorite ball too hard, and now it’s gone missing! King and Kayla must put together the clues to figure out where it went - and who has it.

When Mia moves to Vermont the summer after seventh grade, she's recovering from the broken arm she got falling off a balance beam. And packed away in the moving boxes under her clothes and gymnastics trophies is a secret she'd rather forget. Mia's change in scenery brings day camp, new friends, and time with her beloved grandmother. But Gram is convinced someone is trying to destroy her cricket farm. Is it sabotage or is Gram's thinking impaired from the stroke she suffered months ago?

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.

Join the legion of fans who have made Erin Hunter’s Warriors series a bestselling phenomenon. More thrilling adventures, epic action, and fierce warrior cats await in Warriors #5: A Dangerous Path.

Avoided by the Coast Salish tribes for generations, Hurst Island is one of the last remnants of untracked wilderness on the British Columbia coastal frontier. Not yet overtaken by logging or commercial fishing, it is a final outpost where myth lives on, heedless of human progress or desire. As their boat sinks, Amy and Ian find themselves stranded on this island, unaware of what they are about to face.

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!

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.

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?

The Chicken Squad prides themselves on being ready for anything. Marshmallow life preserves? Check. Copious bags of jellybeans for a car ride? Check. Storm shelter? Storm shelter! They need a storm shelter in case there is ever a storm. So Sugar takes it upon himself to build one in the yard. But it turns out it's not big enough for everyone. And the big dig has unearthed some mysterious surprises.

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.

Kayla needs to return her library books so she can check out new ones. But she can’t find one of them. Where could it be? Can King and Kayla’s friend Jillian help?

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!

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?