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...

The moon base commander has gone missing and Dash Gibson is on the case in the second mind-boggling mystery of the Moon Base Alpha series from the New York Times bestselling author of Belly Up and Spy School.

There's nowhere to hide on the world's first moon base. After all, it's only the size of a soccer field. So when Nina Stack, the commander of Moon Base Alpha, mysteriously vanishes, the Moonies are at a total loss.

Though he may be just twelve years old, Dashiell Gibson is the best detective they've got. But this confusing mystery pushes Dash to his limits....

In this New York Times bestselling novel the moon base commander has gone missing and Dash Gibson is on the case. The second mind-boggling mystery of the Moon Base Alpha series from beloved author Stuart Gibbs.

There's nowhere to hide on the world's first moon base. After all, it's only the size of a soccer field. So when Nina Stack, the commander of Moon Base Alpha, mysteriously vanishes, the Moonies are at a total loss.

Though he may be just twelve years old, Dashiell Gibson is the best detective they've got. But this confusing mystery pushes Dash to his limits. Especially...

Tensions are running high when multi-billionaire Lars Sjoburg is poisoned and demands to go home and everyone is looking to Dash Gibson to solve the case in the finale to the "New York Times"-bestselling series.