Owen Brown is your average fourth grader. Or he was, until his best friend, Dana, disappeared right in front of this face through the floor of the school. Owen is determined to find Dana before anyone realizes she's missing.

Travel deeper into the mysterious world of the Copernicus Legacy with the Copernicus Archives: exciting, fast-paced novellas that get you close to the characters and the heart of the adventure.

The Copernicus Archives #2: Becca and the Prisoner's Cross is studious language expert Becca's thrilling first-person account of the next stop in the Kaplans' perilous journey. As Becca and her family race through London, it's up to Becca to make sense

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Long-time friends and fellow sleuths Jeff Bunter, Brian Rooney, Mara Lubin, and Kelly Smitts, collectively known as the Goofballs, investigate the disappearance of Thunder the pony in their town of Badger Point.

The Goofballs are lucky they are expert detectives when their school talent show becomes a whirlwind of mysterious events!

A hidden door. A magical staircase. Discover the world of Droon!

Lord Sparr is back... and meaner than ever! This time, he is in search of the Coiled Viper, an ancient magical object of unknown, incredible power. Princess Keeah and her Upper World friends - Eric, Neal, and Julie - know they have to stop Sparr from uncovering the Viper. But there's one little catch. The Viper can't be found in Droon... because it's hidden somewhere in the Upper...

Crazy toymakers, disappearing houses, and shrinking boys: Just another day in the Weird Zone!
A blast of strange purple light zaps Sean Vickers while he is riding his bike in Grover’s Mill. His sister Holly assures him that nothing is wrong, but Sean is not so certain—and the creepy new toy-store owner in town is not making him feel any better. When Sean rapidly starts shrinking, he knows the purple light is to blame, But how...

"It's been two months since the Kaplan family hunted down the Serpens relic, but when the evil Galina Krause suddenly and violently reappears, Wade, Darrell, Lily, and Becca have no choice but to face her again. Now they must race to find an artifact said to be crafted by Leonardo da Vinci himself--perhaps the strangest Guardian of all. Along the way, they uncover another layer to Galina's sinister endgame ... and there might not be enough time to...

Noodle and Zeek team up again to beat an evil scientist and save their school
When best friends Noodle and Zeek get on a rocket ride at the carnival, they have no idea that they are about to be blasted into danger. The rocket turns out to be real, and when Noodle and Zeek crash-land, they are sucked into a secret laboratory under Mayville School. There they find their old science teacher Mr. Vazny—who’s about to blow it up!...

"In this first in a series of six novellas in the Copernicus Legacy series, Wade travels to Hawaii and San Francisco in a race to find one of the twelve ancient relics"--

Thirteen-year-old Jeff's life spirals downward into homelessness after his alcoholic mother loses her job.--