Dash Gibson solves mysteries on the space station he calls home in this hilarious New York Times bestselling series from Stuart Gibbs! All three books of the Moon Base Alpha series are now available together in a collectible boxed set! Twelve-year-old Dashiell Gibson solves murders, finds missing people, and searches for a rogue poisoner in this far-out adventure series from the author of Belly Up and Spy School! This mind-boggling mystery collection includes: Space Case Spaced Out Waste of Space

It’s a murder mystery on the moon in this humorous and suspenseful space adventure from the author of Belly Up and Spy School that The New York Times Book Review called “a delightful and brilliantly constructed middle grade thriller.” Like his fellow lunarnauts—otherwise known as Moonies—living on Moon Base Alpha, twelve-year-old Dashiell Gibson is famous the world over for being one of the first humans to live on the moon. And he’s bored out of his mind. Kids aren’t allowed on the lunar surface, meaning they’re trapped inside the tiny moon base with next to nothing to occupy their time—and the only other kid Dash’s age spends all his time hooked into virtual reality games. Then Moon Base Alpha’s top scientist turns up dead. Dash senses there’s foul play afoot, but no one believes him. Everyone agrees Dr. Holtz went onto the lunar surface without his helmet properly affixed, simple as that. But Dr. Holtz was on the verge of an important new discovery, Dash finds out, and it’s a secret that could change everything for the Moonies—a secret someone just might kill to keep...

In 2041 twelve-year-old Dashiell Gibson's a resident of Moon Base Alpha, and at the moment he's faced with a number of problems: coping with the nasty Sjoberg twins, finding out how the commander of the base has managed to disappear from a facility no bigger than a soccer field, and dealing with the alien Zan, who communicates with him telepathically from afar--and who's hiding a secret which may threaten the whole Earth.

In 2041 on Moon Base Alpha, thirteen-year-old Dash must solve the mystery of how Lars was poisoned before the base loses oxygen, forcing the colonists to return to Earth.--Provided by publisher.

12 year old Theodore "Teddy" Roosevelt Fitzroy has got a murder on his hands and trouble on his tail. Henry, the hippopatamus at the brand-new nationally known FunJungle, has gone belly up. Even though it's claimed he died of natural causes, Teddy smells something fishy and it sure ain't the polar bear's lunch. Dealing with the zoo's top brass proves to be nothing but a waste of time. They want to see any trace of Henry's death disappear like yesterday's paper. So Teddy sets out to find the truth. With the help of Summer McCraken, a fiesty girl with secrets of her own, the two narrow down their prime suspects. Is it Martin Del Gato, FunJungle's head of operations who hates kids and hates animals even more? Or J.J McCraken, the owner of FunJungle and and hates animals even more? Or J.J McCraken, the owner of FunJungle and Summer's father, who has more concern for the dough he's raking in than the animals in the zoo? As their investigation goes on, Teddy gets squeezed on all sides to quit asking questions or Henry won't be the only animal in the zoo to turn up dead. The deeper Teddy and Summer get, they had better make sure they want to know what they want to know because when it comes to hippo homicide, the truth can't be kept in a cage!

In this sequel to the New York Times bestselling Charlie Thorne and the Last Equation—which #1 New York Times bestselling author Chris Grabenstein called “a real page-burner”—Charlie searches for Charles Darwin’s hidden treasure in South America. Charlie Thorne is a genius. Charlie Thorne is a fugitive. Charlie Thorne isn’t even thirteen. After saving the world, Charlie is ready to take it easy in the Galapagos Islands. That is, until she’s approached by the mysterious Esmeralda Castle, who has a code she knows only Charlie can decipher. In 1835, Charles Darwin diverted his ship’s journey so he could spend ten months in South America on a secret solo expedition. When he returned, he carried a treasure that inspired both awe and terror in his crew. Afterward, it vanished, never to be seen again… But Darwin left a trail of clues behind for those brave and clever enough to search for it. Enter Charlie Thorne. In a daring adventure that takes her across South America, Charlie must crack Darwin’s 200-year-old clues to track down his mysterious discovery—and stay ahead of the formidable lineup of enemies who are hot on her tail. When an ancient hidden treasure is at stake, people will do anything to find it first. Charlie may be a genius, but is she smart enough to know who she can trust?

While visiting a ranch near Yellowstone National Park with his parents, Summer, and her parents, Teddy Fitzroy investigates the disappearances of bison and an irreplaceable necklace.

After tracking down incredible discoveries by Einstein and Darwin, Charlie is back. This time, the great ruler Cleopatra has left behind an extremely valuable and powerful treasure, its location encoded on an ancient stone tablet. In a breathless adventure that takes her across the globe, Charlie must fight for her life against ruthless enemies, match wits with Cleopatra, and solve the two-thousand-year-old mystery to prevent the most powerful treasure of the ancient world from falling into the wrong hands.

"Superspy middle schooler Ben Ripley races against time and across state lines - traveling by car, train, boat and plane - to track Murray Hill down before Ben's cyber enemies can find him"--

The first book in the thrilling time travel adventure trilogy from New York Times bestselling Charlie Thorne and Spy School author Stuart Gibbs. Before they were legends, they were friends. All for one and one for all! On a family trip to Paris, Greg Rich's parents disappear. They're not just missing from the city—they're missing from the century. So, Greg does what any other fourteen-year-old would do: He travels through time to rescue them. Greg soon finds out that his family history is tied to the legendary Three Musketeers. But when he meets them, they're his age, and they'll only live long enough to become true heroes if he can save them. To rescue his parents, Greg must assume the identity of a young Musketeer in training and unite Athos, Porthos, and Aramis—but a powerful enemy is doing everything possible to stop him. And don't miss Traitor's Chase and Double Cross, the next two books in Stuart Gibbs's thrilling Last Musketeer trilogy!