Nature Mysteries

It's the weekend—a perfect day for a sail off the coast of Maine. But there's something fishy going on with the local dolphins and Abbi, Lydia, and Daniel are determined to find out why. Are the dolphins twisting, leaping, and whistling because they're playing? Or is it a warning of nearby danger? And if it's danger, how can the kids get grownups to believe them? Abbi and her friends are diving head first into this mystery!

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.

Didi Dodo, the heroic spy, and Koko Dodo, the cookie chef, are off to solve another kooky caper! In Double-O Dodo, Koko has a big problem: His trusty assistant, the Queen, has been kidnapped! Over a frantic phone call, she tells Koko that she’s been kidnapped by a human, which is preposterous - everyone knows that humans aren’t real! Luckily, Didi is on the case. Her plan: To go undercover at the Humanland amusement park to find the Queen.

Help solve the mystery with the detective dog, set sail on an exciting adventure in the flying bath and cook up a feast for a very fussy king! This collection includes stories from four of Julia's illustrator partnerships: David Roberts, Sara Ogilvie, Catherine Rayner and Rebecca Cobb.

Can you SPOT the mystery? Dink, Josh, and Ruth Rose are visiting the San Diego Zoo. When a rare amur leopard goes missing, everyone is a suspect! Can these expert clue hunters find out how the leopard got loose?

When the Aldens hear that Mr. Wood's cat Spotzie is missing, they immediately help out by putting up "LOST CAT" posters and going door-to-door with a photograph of the cat. But along the way, they meet some strange characters, receive frightening phone calls, and even find a cat that looks just like Spotzie - but is it? It seems that the more they search, the more mysterious the mystery becomes!

A backpack full of jewels has fallen out of a plane! Was it just an accident? The Boxcar Children need to find out what happened!

When Mercy Watson the pig goes missing, all of Deckawoo Drive is in an uproar. The Watsons are inconsolable, and the local police, fire, and animal control departments are no help whatsoever. Bossy neighbor Eugenia Lincoln is not quite as sad as she might be, but thankfully her sister, Baby Lincoln, has the idea to hire a private investigator. Granted, Percival Smidgely, PI, may be more bumbler than gumshoe, but his pigeon, Polly, is there to point the way.

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.

A horror novel set in Meirion, Wales, during the summer of 1915. As the world teeters on the brink of destruction in 1915, Meirion, a quiet district in Wales, finds itself gripped by a wave of terror. Amid the chaos of World War I, the town’s residents confront an inexplicable horror as nature itself seems to rise against humanity. With a series of grisly deaths igniting panic and superstition, the chilling question looms—what truly lies beneath the madness? The fabric of the community begins to fray as the death toll rises, starting with a missing child, then escalates to a horrific ...

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!

When someone you love goes to jail, you might feel lost, scared, and even mad. What do you do? No matter who your loved one is, this story can help you through the tough times.

Honey Santana, impassioned, willful, possibly bipolar, self-proclaimed "queen of lost causes", has a scheme to help rid the world of irresponsibility, indifference, and dinnertime sales calls. She's taking rude, gullible Relentless, Inc., telemarketer Boyd Shreave and his less-than-enthusiastic mistress, Eugenie, into the wilderness of Florida's Ten Thousand Islands for a gentle lesson in civility.

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.

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?

A wonderful collection of heart-warming stories from best-selling author Holly Webb, perfect for animal-loving children.

The Aldens must find a way to solve many mysteries, and all before 5:00 p.m. on Tuesday! Strange things are happening in Greenfield where the Boxcar Children live. Stray cats and dogs appear on doorsteps, but the animal shelter is forced to close, and a nice old woman disappears. Henry, Jessie, Violet, and Benny are very worried about Mrs. Newcombe. Is she in danger? Who are the strange men lurking around her house?

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 my old friend Professor von Volt called to ask for help, I agreed immediately, even though it meant trekking halfway around the world to Mouse Everest! The trip was long and dangerous. I almost froze my tail off along the way. And then I was kidnapped by a yeti! Yes, it was truly an amazing adventure.

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?