On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.

In July, 1916, Chet Roscow is fascinated by news accounts of the great white shark said to be attacking people along the New Jersey shore not far from his home, but when he goes swimming in Matawan Creek he discovers the truth of the stories.

When wizard potions fail to heal Ana's sick dragon, Drake's dragon uses his special powers to take the Dragon Masters on a perilous quest across the world in search of a cure

Drake has a dream about a new dragon that is somehow trapped in a cave, so Drake, Ana and their two dragons set off to find the Rainbow Dragon's dragon master, Obi, and together they must rescue Rainbow dragon, Dayo, from Kwaku, a giant spider, who spinsa deadly web.

Jack and Annie travel 500 years back in time to Florence, Italy, and spend a day helping Leonardo da Vinci in the hope of learning another secret of happiness.

Eleven-year-old Melody Vega and her family visit Glacier National Park every summer, but this year Mel comes face-to-face with a terrifying grizzly bear.

When John Hale's parents moved from Chicago to a farm in the Dakota Territory in the late 1880s, he was not happy (too hot in summer, too cold in winter, and that is just the beginning); but after a year, and now eleven, he has settled in and made some friends at school--but when a sunny day in January 1888 turns abruptly into a deadly blizzard he will need all his strength and courage to survive what became known to history as The Children's Blizzard....

When Paul, a French boy living in a Nazi controlled village, finds an American paratrooper in a tree near his home, he has a chance to play a role in the Allies plan to crush the Nazis.

The Dragon Masters have defeated the evil wizard Maldred, but not before the Kingdom of Bracken was devastated by Naga, the earthquake dragon; now Drake and his dragon, Worm, must appeal to the spring dragon, Fallyn, who is their only hope of restoring Bracken before its people starve--but Fallyn lives deep inside a secret fairy world, and Drake must pass a series of tricky tests before he can even make his appeal.

Drake and the other Dragon Masters go to the island of Kapua seeking a Sea Dragon needed to help stop the evil wizard Astrid's dangerous False Life spell.