Showing titles in Action & Adventure

Flavia, Jonathan, Nubia and Lupus–the four friends from The Thieves of Ostia–sail to the Bay of Naples to spend the summer with Flavia’s uncle, who lives near Pompeii. There they uncover a riddle that may lead them to great treasure. Meanwhile, tremors shake the ground, animals behave...

The Aldens are visiting friends for a big Dia de los Muertos celebration. The kids love learning about the holiday and helping out until mysterious events threaten to ruin everyone's preparations. Can the Aldens figure out what’s going on and help their friends save the celebration?

When the Aldens hear that Grandfather's friend Mrs. Ashleigh had an ancestor who was a pirate, they decide to hunt for his hidden treasure. But then strange things start to happen, and it looks like someone else wants to find the treasure - and keep it! Can the Boxcar Children stop the thief before the next hurricane hits?

Teddy Fitzroy returns as FunJungle’s resident zoo sleuth when a rhinoceros is at risk in Big Game, a follow-up to Belly Up and Poached—which Kirkus Reviews called a “thrill-ride of a mystery.” When someone takes aim at Rhonda Rhino, FunJungle’s pregnant (and endangered) Asian greater...

A fast-paced and exciting read for middle grade fantasy, mystery, and animal buffs. Something strange is happening at the Clarksville City Zoo. Late at night, monkeys are scaling the walls and searching the neighborhood—but what are they looking for? Noah, his sister Megan, and their best...

Scorpia has dogged Alex Rider for most of his life. They killed his parents, they did their best to con Alex into turning traitor, and they just keep coming back with more power. Now the world's most dangerous terrorist organization is playing with fire in the world's most combustible land: the Middle East. No one knows Scorpia like Alex. And no one knows how best to get to Alex like Scorpia. And this time, Alex won't get away.

When Hank the Cowdog hears suspicious sounds coming from near Sally May's clothesline, it leads to a midnight investigation of the ranch. Before he knows it, Hank finds himself caught up with his old friend Eddy the Rac - and face-to-face with one of a dog's greatest enemies: the dreaded Laundry Monster!

Fresh off saving the French Four—a quartet of American treasures—and their mom's museum, Carter twins Ike and Iris are back in Washington, D.C., when they're summoned to the National Archives by the FBI Art Crimes Team because the Statue of Liberty is missing. Well, not the statue. But pieces of the flame packed away in 1916 have somehow vanished. The Smithsonian has organized an elaborate, high-profile event around the artifacts in six days—with the presidents of both the U.S. and France set to attend—and the flame's absence will be a national embarrassment.

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...

"Joe," I said, concerned, "hit the brake!" "I am," Joe said, pumping the pedal now. But the car didn't slow at all. The traffic light turned red as we hurtled toward the intersection. And suddenly I saw the one other car out this early on a Saturday morning - a huge Express Delivery truck! Joe screamed. I leaned forward, bracing myself against the dashboard. There was nothing we could do. It was speeding right at us!

The Boxcar Children have entered the Ruby Hollow Gem Mine’s annual gem-hunting competition. With a little instruction and the right gear, the Aldens have everything they need to become real rock hounds! They have a natural talent for rock-finding, and it’s not long before Jessie makes a fabulous find. But before she can enter her ruby in the competition, it disappears! Could there be a thief at the mine? Now, instead of digging for rocks, the Aldens are digging for clues. Who wants to win the contest so much that they would steal from the Aldens? The children don’t know, but they’re determined to find out!

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...

It’s an unusual winter vacation for the Alden family when a huge snowstorm traps them in the woods! Luckily, the log cabin where they’re staying is cozy—only there are strange noises in the night and a mysterious code carved into the closet door. The rescue is a long wait for the Boxcar Children, but the cabin is full of secrets.

The Aldens spend the summer on their own private island. There they meet a new friend with an amazing secret!

In early 20th-century Vienna, Annika is raised by Ellie and Sigrid, a cook and housemaid for a household of three professors. Abandoned when she was a baby, Annika dreams of the day her mother will come back to claim her. Then one day, it happens. A glamorous woman arrives and sweeps Annika away to a crumbling castle in Germany. But there is much more to this new woman than meets the eye - and none of it is good.

#1 NEW YORK TIMES BESTSELLING SERIES In this gripping legal thriller for young readers, danger has a way of finding Theodore Boone—“a terrific character, an everyman kind of kid” (USA Today)! “Edge-of-your-seat drama, sophisticated plotting, and plenty of spunk.”—Chicago...

When 10-year-old Derek and 8-year-old Sam move with their family to Virginia, they have no idea what adventures the summer will bring. As the brothers explore their creaky old house and the deep surrounding woods, they uncover a 60-year-old mystery of a valuable coin collection stolen from the local museum.

Summer, 1940. Hitler's army is advancing towards Paris, and millions of French civilians are on the run. Amidst the chaos, two British children are being hunted by German agents. British spy Charles Henderson tries to reach them first, but he can only do it with the help of a 12-year-old French orphan. The British secret service is about to discover that kids working undercover will help to win the war.

The Boxcar Children are going on a canoe trip with Grandfather and Aunt Jane. They enjoy paddling across the sparkling lake and camping under the stars. But their trip really gets interesting when they find a mysterious riddle leading them to hidden treasure!

A New York Times bestseller! In the tradition of Nancy Drew, four kids and one grandfather in Miami tackle a decades-old mystery in this first book full of “atmosphere, history, and lively humor” (Publishers Weekly, starred review) in the Sherlock Society middle grade series from New York...