Most Popular Books by Stuart Gibbs

Can an undercover nerd become a superstar secret agent? The first book in Stuart Gibbs’s New York Times bestselling Spy School series is now a graphic novel! Ben Ripley may only be in middle school, but he’s already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn’t exactly scream “secret agent.” In fact, Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science—but he’s entirely shocked to discover that the school is actually a front for a junior CIA academy. Could the CIA really want him? Actually, no. There’s been a case of mistaken identity—but that doesn’t stop Ben from trying to morph into a supercool undercover agent, the kind that always gets the girl. And through a series of hilarious misadventures, Ben realizes he might actually be a halfway decent spy…if he can survive all the attempts being made on his life! Join Ben Ripley as he survives his first year at the Academy of Espionage in action-packed, full-color panels.

In the eighth book in the New York Times bestselling Spy School series, Ben Ripley faces the Croatoan—a new evil organization that’s so mysterious, the only proof it exists is from the American Revolution. With SPYDER defeated, Ben Ripley is looking forward to his life getting back to normal, or as normal as possible when you’re a superspy in training. Until someone bombs the CIA conference room next door. To Ben’s astonishment, the attacker is none other than Erica Hale, the spy-in-training he respects more than any other. His mission: prove Erica is not a double agent working against the US, locate the fabled colonial-era insurgent group that’s blackmailing her, figure out what their devious plot is, and thwart it. But this time, Ben finds himself up against opponents he has never encountered before: his own friends. How can he succeed when he doesn’t even know who he can trust?

In the sixth book in the New York Times bestselling Spy School series, Ben is taken to Mexico by his nemesis in the hopes that he’ll finally be able to take down SPYDER. Thirteen-year-old Ben Ripley has been caught in the snares of SPYDER more than once and knows well enough to be suspicious of anything that seems too good to be true—despite needing special tutoring in advanced survival techniques. So when Murray Hill finally breaks his silence with an offer to hand over the SPYDER elite, Ben knows that there must be something going on. But his hesitation doesn’t stop the assignment. The mission: Follow Murray Hill to an undisclosed location with no one else but Erica Hale to identify SPYDER leadership. However, as Ben suspected, nothing goes as planned, and what should be an easy mission quickly turns deadly. Ben and Erica will have to face rogue agents, trained killers, and even very hungry crocodiles in a race against the clock to find out what SPYDER is up to this time—and thwart their evil plans.

"Someone is trying to hunt FunJungle''s Asian greater one-horned rhinoceros, and twelve-year-old Teddy Fitzroy is on the case."--

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!

"Follows the spies-in-training on a hunt to find the leader of the evil organization SPYDER and take them down once and for all"--

In the seventh novel in New York Times bestselling Stuart Gibbs’s FunJungle series, Teddy Fitzroy returns as FunJungle’s resident sleuth to solve the disappearances of endangered bison and an irreplaceable necklace. Teddy Fitzroy, his family, and some other FunJungle employees have been invited to visit a bison ranch just outside Yellowstone National Park that FunJungle’s owner, J.J. McCracken, is considering purchasing. But as usual, trouble isn’t far behind. The ranch’s endangered bison have been mysteriously disappearing. Then a massive local grizzly bear named Sasquatch breaks into the house, causing chaos. In the aftermath, Kandace McCracken discovers that her exceptionally expensive sapphire necklace has vanished. Was it stolen? Or did Sasquatch eat it? (And if so, can it be recovered?) And what’s been happening to the bison? With over a dozen suspects, it’s up to Teddy to detangle this hairy situation, before his family or friends—or any more expensive objects—become dinner.

A New York Times bestselling series. Tensions are running high when multi-billionaire Lars Sjoburg is poisoned and everyone is looking to Dash Gibson to solve the case in this third and final book in the New York Times bestselling Moon Base Alpha series. Moon Base Alpha was supposed to be an exciting place to live, but Dashiell Gibson didn’t expect for it to be this exciting. He’s already had to solve a murder and locate a missing moon base commander. Now, he just wants to have a calm, quiet thirteenth birthday. But, of course, trillionaire (and total pain) Lars Sjoburg ruins it—by being poisoned. Now there’s another potential killer loose on Moon Base Alpha, and Dash is forced to identify the most likely suspects. Suddenly Dash finds himself with a target on his back. Whoever poisoned Lars will stop at nothing to keep his—or her—identity a secret.

"Dashiell Gibson, who lives on Moon Base Alpha, has to solve a murder of one of the moon''s most prominent doctors"--

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.

Teddy Fitzroy’s back for another zoo mystery—this time it’s a koala caper—in this action-packed follow-up to Belly Up that School Library Journal called a “whopper of a whodunit that delivers plenty of suspects, action, slapstick, gross bodily functions, red herrings, and animal trivia.” School troublemaker Vance Jessup thinks Teddy Fitzroy’s home at FunJungle, a state-of-the-art zoo and theme park, is the perfect place for a cruel prank. Vance bullies Teddy into his scheme, but the plan goes terribly awry. Teddy sneaks into the koala exhibit to hide out until the chaos dies down. But when the koala goes missing, Teddy is the only person caught on camera entering and exiting the exhibit. Teddy didn’t commit the crime—but if he can’t find the real culprit, he’ll be sent to juvie as a convicted koala-napper.

Thirteen-year-old Teddy Fitzroy and his girlfriend, Summer, investigate when a mountain lion is accused of killing a prized dog outside of FunJungle Wild Animal Park in the Texas Hill Country.

Now with a reimagined look! Set sail to Atlantis with Tim and his friends in the laugh-out-loud funny, highly illustrated fourth book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart Gibbs. Tim and his ragtag crew have been rescued from certain doom by a mermaid princess—but now, she wants something in return for saving their lives: her father King Neptuna’s stolen trident. To pay their debt, Tim, Belinda, Ferkle, Rover, and Princess Grace once again brave the Sea of Terror to track down the trident in the glorious city of Atlantis, which hasn’t sunk into the sea yet. (In fact, it is famed as the safest city on earth.) But there is plenty of danger en route—and the notorious Prince Ruprecht is lurking about as well. Can the junior knights evade the scheming royal and complete their quest?

In the latest novel in New York Times bestselling author Stuart Gibbs’s FunJungle series, Teddy Fitzroy returns as FunJungle’s resident sleuth to solve his most improbable mystery yet—with a victim that’s 65 million years old. Teddy was all set for a campout at his friend Sage’s family ranch—but then Sage gets terrible news: The skull of a rare dinosaur that was being excavated on his property has mysteriously vanished overnight in the middle of a rainstorm, even though it weighed 500 pounds. Not a single footprint has been left behind. Since the dinosaur was top secret, the police don’t believe anyone outside the dig could have stolen it. A T-rex skull can sell for millions of dollars, and everyone is a suspect—including J.J. McCracken, the owner of FunJungle. Meanwhile, Teddy’s old foes, the Barksdale twins, have gotten into trouble with an illegally purchased anaconda, and Teddy’s girlfriend Summer wants to find out who’s behind the local trade in black market reptiles. The two cases will drag Teddy into more danger and chaos than ever before, in this mystery that’s stranger than fiction.

Ben goes undercover in the White House to take on a SPYDER operative determined to assassinate the president in this latest addition to the New York Times bestselling Spy School series. Thirteen-year-old Ben Ripley has had a lot of field success despite only just beginning his second year at Spy School, something even graduates rarely experience. But he''d never have survived without the help from experienced agents and his friends. Now he''s been called in on a solo mission--and the fate of the United States of America is on his shoulders alone. The Mission: Prevent a presidential assassination by infiltrating the White House, and locating the enemy operative. But when the president''s son is as helpful as a hamster, and a trained SPYDER agent would never appear to be up to something (they''re far too clever for that), Ben may be in over his head this time. And when everything goes wrong, Ben must rely on his Spy School friends to save his reputation...but even friends can double-cross or be swayed to the enemy''s side.

In the eleventh book in the New York Times bestselling Spy School series, Ben Ripley goes on a rescue mission when one of his own is abducted from a remote Alaskan training facility. Ben Ripley and his friends are training in Alaska when Cyrus Hale is kidnapped by his old Russian nemesis. Ben, Erica, and the others mount a rescue mission, but events quickly spiral out of control in a plot involving the secret history of US-Russian relations, a young KGB agent with skills to rival Erica’s—and lots and lots of bears.

While visiting his girlfriend Summer in Malibu, Teddy stumbles upon two mysteries involving a blown up whale explosion and a string of beach sand thefts, but his investigation is sidetracked by a rumor that his girlfriend is dating a celebrity, leading him to question their relationship.

The New York Times bestselling Spy School series continues in graphic novel form with the fourth book as Ben Ripley enrolls in ski school, where the slopes—and the stakes—get really steep. Thirteen-year-old Ben Ripley is not exactly the best student spy school has ever seen—he keeps flunking Advanced Self Preservation. But outside of class, Ben is pretty great at staying alive. His enemies have kidnapped him, shot at him, locked him in a room with a ticking time bomb, and even tried to blow him up with missiles. And he’s survived every time. After all that unexpected success, the CIA has decided to activate Ben for real. The Mission: Become friends with Jessica Shang, the daughter of a suspected Chinese crime boss, and find out all her father’s secrets.

“Fast-paced, smart, and action-packed...a real page-burner.” —Chris Grabenstein, #1 New York Times bestselling author of the Mr. Lemoncello’s Library series From New York Times bestselling author Stuart Gibbs comes the first novel in a thrilling new series about the world’s youngest and smartest genius who’s forced to use her unbelievable code-breaking skills to outsmart Einstein. Charlie Thorne is a genius. Charlie Thorne is a thief. Charlie Thorne isn’t old enough to drive. And now it’s up to her to save the world… Decades ago, Albert Einstein devised an equation that could benefit all life on earth—or destroy it. Fearing what would happen if the equation fell into the wrong hands, he hid it. But now, a diabolical group known as the Furies are closing in on its location. In desperation, a team of CIA agents drags Charlie into the hunt, needing her brilliance to find it first—even though this means placing her life in grave danger. In a breakneck adventure that spans the globe, Charlie must crack a complex code created by Einstein himself, struggle to survive in a world where no one can be trusted, and fight to keep the last equation safe once and for all.

In the twelfth book in Stuart Gibbs’s New York Times bestselling Spy School series, superspy middle schooler Ben Ripley gets lost on a perilous mission with one of his greatest enemies. Ben Ripley is recruited for a top secret mission to bring down his nemesis, Murray Hill, once and for all. But when things go horribly wrong, Ben ends up lost in an extremely dangerous wilderness with Murray—and confronting a new, devious enemy—with none of his friends to help him. Now, Ben must figure out how to survive and deduce what evil plan his new enemy is plotting in time to thwart it.

Teddy Fitzroy must solve the crime of the kidnapped rare and expensive panda, Li Ping.

Tim and his friends travel by land and sea, collecting treasure and defeating monsters as they go.

In the second book in the New York Times bestselling Spy School series, top-secret training continues into summer for aspiring spy Ben Ripley—and so does the danger. Ben Ripley is a middle schooler whose school is not exactly average—he’s spent the last year training to be a top-level spy and dodging all sorts of associated danger. So now that summer’s finally here, Ben would like to have some fun and relax. But that’s not going to happen during required spy survival training at a rustic wilderness camp, where SPYDER, an enemy spy organization, has infiltrated the spies’ ranks. Can Ben root out the enemy before it takes him out—for good?

Now with a reimagined look! Knight-in-training Tim and his best friend, Belinda, embark on a quest to save Princess Grace in the laugh-out-loud funny, highly illustrated second book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart Gibbs. Prince Ruprecht is VERY UPSET that knights-in-training, Tim and Belinda, have thwarted his plans and ruined his chances with Princess Grace. And so, to get even, he has kidnapped the princess and trapped her in the most complicated, dangerous, complex, dastardly, biggest (okay you get the point)…and scariest maze in all the world! Now it’s up to Tim, Belinda, Ferkle, and Rover to fend off menacing beasts (like the minotaur), conquer treacherous obstacles (like chasms filled with cave sharks), find their way through the labyrinth (which is very tricky), and rescue the princess before time runs out. Oh, and also they need to remember how to get back out again…or they’ll be trapped inside the maze forever.

In the ninth addition to the New York Times bestselling Spy School series, Ben Ripley faces his nemesis, Murray Hill, on the high seas. Thanks to the evidence Ben uncovered in his investigation of the Croatoan, the CIA has tracked his nemesis, Murray Hill, to Central America, where they believe he is boarding the world’s biggest cruise ship, The Emperor of the Seas, on its maiden voyage around the world. His mission: Pose as part of a family, with Alexander and Catherine Hale as his parents, Erica as his sister, and his best friend Mike as his brother, to find out what Murray is plotting. At first, it sounds exciting to have a mission on the most glamorous ocean liner on earth, but as usual, nothing goes according to plan. There is action, danger, and plenty of surprises as Ben and his team quickly find themselves in hot water.

Charlie Thorne, along with former agents Dante Garcia and Milana Moon, race to find an immensely powerful discovery of Isaac Newton''s and face challenges and enemies along the way.

Thirteen-year-old Ben Ripley is not exactly the best student spy school has ever seen--he keeps flunking Advanced Self Preservation. But outside of class, Ben is pretty great at staying alive. His enemies have kidnapped him, shot at him, locked him i

On the first day of 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 kids 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, Aramis, and D’Artagnan—but a powerful enemy is doing everything possible to stop him from succeeding.

In the tenth book in the New York Times bestselling Spy School series, Ben Ripley races against time and across state lines—by car, train, boat, and plane—to avoid his new cyber enemies and track down Murray Hill. Ben Ripley’s longtime nemesis, Murray Hill, has put a price on Ben’s head and accused him of being at the center of a conspiracy on the internet. Now Ben finds himself in his greatest danger yet, on the run from both assassins and conspiracy theorists. Ben must find Murray before his machinations catch up to Ben—but with so much at stake, even some of Ben’s most trusted friends might not be at the top of their game, leaving Ben to be tested like never before.

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?

Now with a reimagined look! Join a peasant boy who wants to be a knight in the laugh-out-loud funny, highly illustrated first book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart Gibbs. Tim is just a peasant, but he dreams big. He wants more out of life than to grow up to be a woodsman like his father. Unfortunately, the only route to success in the kingdom of Wyld is to be born a prince. Still, Tim is determined. He is brave and clever and always tries to do the right thing—even though he rarely gets the credit for it. Then news spreads that Princess Grace of the neighboring kingdom has been abducted by the evil Stinx and Prince Ruprecht needs a legion of knights to join him on his quest to rescue her. Tim finally has the lucky break he’s been waiting for, the opportunity to change his station in life. And even though he doesn’t know how to ride a horse or wield anything more deadly than a water bucket, he’s going to do whatever it takes to make sure his dream becomes a reality.

Calling all future astronauts: get ready for your next space adventure with this free downloadable sampler of great books! Download this FREE sampler for excerpts from William Alexander, Stuart Gibbs, Ken Jennings, and Wesley King. Learn more about the books at SpaceAdventureBooks.com!

Loyalty is tested in this second book in the thrilling time travel adventure trilogy from New York Times bestselling Charlie Thorne and Spy School author Stuart Gibbs. Having assumed the identity of a young D’Artagnan, Greg Rich is beginning to get the hang of things in 1615 Paris. But he hasn’t figured out how to get home yet. Or how to defeat the dangerous Michel Dinicoeur, who has made it his mission to destroy Greg, Athos, Aramis, and Porthos. When Dinicoeur escapes the Bastille and flees to Spain, the Musketeers charge after him, only to be ambushed. Someone is anticipating their every move. Could there be a traitor in their midst? If the Musketeers can’t trust each other, who can they trust? It’s “all for one and one for all” . . . isn’t it? And don’t miss the action-packed finale, The Last Musketeer #3: Double Cross.