Nature Mysteries

When Henry and his big dog Mudge see a spy kit for sale, they know right away that it's time to break open the piggy bank. With their spy hat and magnifying glass and secret code card, Henry and Mudge can flirt with danger, steal secrets, and start cracking codes. On their first spy mission, Henry tells Mudge to try not to look suspicious. Mudge rolls in the mud and chews on an old shoe, so no one will ever think he's a spy. But then Henry finds a piece of paper with a real spy code written on it.

A lovable dog helps his human girl solve a mystery. Thor has been accused of wrecking Mr. Gary’s yard, knocking over trash cans, eating the vegetables out of the garden, and pooping. But King and Kayla, with the help of some other neighbors, are determined to clear his name, using a wide variety of familiar and new detecting skills. With simple, straightforward language and great verbal and visual humor, the King & Kayla series from Geisel Honor Award-winning team Dori Hillestad Butler and Nancy Meyers is perfect for newly independent readers.

Samantha Moon figured her daughter's birthday would be nice and normal, not usher in a magical apocalypse. Amid the frequent chaos in her life, Sam has learned to take comfort in the boring moments. She's one of the few people who doesn't mind a long day in the office. So when Paxton's fourteenth birthday rolled around, she expected it would be cute, innocent and full of unicorn-themed stuff. An actual unicorn, though? Not so much. What's an immortal psychic vampire to do when a creature of fable decides to crash in their backyard? Sam has no idea. However, it soon becomes apparent that the...

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?

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?

When a remote camera on a large, rugged expanse held by the Land Trust for Wildlife Conservation picks up a blurry image of what could be a mountain caribou, they contact Alex Carter to investigate. After all, mountain caribou went extinct in the contiguous U.S. years ago, and if one has wandered down from Canada, it’s monumental.

The Aldens are going to visit a guide dog school - but once they arrive, mysterious things start to happen. Benny sees strange lights in one of the dormitory rooms... and late one night, someone breaks into the kennel where the guide dogs are kept. Is someone after one of the dogs? The Boxcar Children are determined to find out!

Jay Gardiner has given himself a fool’s errand—to find the remains of his deceased father in the Pacific Ocean off the coast of Monastery Beach. He knows it’s a long shot, but Jay feels it’s the only way for him to lift the weight of guilt he has carried since his dad’s death by suicide the previous year.

Everyone loves Drover, Hank's trusty sidekick. But have you ever wondered what the little, white, stub-tailed dog's life was like before he came to the ranch? Well, it's all here, in Drover's own words. Scratching his story out in the dirt on the machine shed floor, Drover comes clean about his secret life--from his early days as runt of the litter, to his frustrating search for a job, to his ultimate position as Hank's right-paw man.

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!

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.

When Hank is attacked by a Headless Cowboy, he knows it's going to be a tough day defending the ranch! But when Slim discovers Sally May's watermelon patch has been raided by raccoons, things get serious. Slim, Drover, and Hank are entrusted with the job of a nighttime stakeout to catch the raccoons in the act. Will Hank save the day? Or will busted watermelons prove Hank is a bust as the Head of Ranch Security?

It's roundup time, and Hank the Cowdog is ready to strut his stuff. So what's Benny - a world-class cattle dog with the papers to prove it - doing at the ranch? As Head of Ranch Security, Hank knows it's his job to find out. But what Hank learns isn't easy to swallow. Benny has been brought in to take his place in the roundup!

Hank the Cowdog is in hot water with Sally May--again! But, before Hank has a chance to convince her how sorry he is, he learns the ranch is being targeted for a major invasion from his arch-enemies the coyotes. Does Hank have what it takes to save his reputation, protect the ranch, and make things right with Sally May? Hank sings about his dog food in "Eating Doesn't Have to Be Fun", and Hank stops in his tracks when he hears "The Coyote Chicken Chant".

When the Dearly's Dalmatians have their first litter of puppies (fifteen in all) everyone is delighted. But their joy is shattered when the pups are kidnapped! The humans don't have a clue as to who the culprit is, but the smartest dogs in London are on the case, and on the trail of fur-loving Cruella de Vil, who will stop at nothing to have a Dalmatian fur coat!

Meet Tyrone the Tyrannosaurus, Green Lawn’s newest–and biggest!–visitor. The kids’ old friend Jud Wheat is in town raising funds for a dinosaur museum. But after the show in Green Lawn, all Jud’s money disappears! Can Dink, Josh, and Ruth Rose track down the cash?

The Aldens have promised Grandfather a vacation from mysteries during their island visit. But the promise proves hard to keep when things start to go missing. Then an old fisherman tells Benny of the island’s ghost horse, and late that very night Benny sees a mysterious stallion galloping down the beach. Could the ghost horse have something to do with the disappearances?

A novice witch. A collie companion. Can this clever duo put noses to the ground to chase down a killer? Sarah Spellwood can’t wait to learn all her powerful ancestor’s magic and repair the reputation of witches. But despite hours of study and her talking dog’s support, she still doubts her spellcasting skill. And she’s about to face a major test when she’s plunged into a battle between good and evil after the enchanted forest’s protective deed is stolen and the town clerk brutally murdered… With the finger pointing at woodland wolves for the fatal mauling, Sarah and her pooch ...

All ancient and indigenous peoples insisted their knowledge of plant medicines came from the plants themselves and not through trial-and-error experimentation. Less well known is that many Western peoples made this same assertion. There are, in fact, two modes of cognition available to all human beings - the brain-based linear and the heart-based holistic. The heart-centered mode of perception can be exceptionally accurate and detailed....

It's summertime, and the weather on Hank's West Texas ranch is hot and dry. So dry, in fact, that everyone is on the lookout for prairie fires. So Hank bravely adds the title of Head of Fire Safety to his already impressive list of responsibilities and gets to work. But patrolling for fires is dull, and it's hard to do on an empty stomach. Despite the distractions - desperate hunger, a cruel trick at the hands of Pete the Barncat - Hank somehow manages to stay focused on the job at hand.