Twelve-year-old twins Nick and Eryn investigate why their mother and new stepfather are keeping secrets, why they are forbidden to meet their stepsiblings, and most important, why their lives are in danger.

Imagine being forced to move to a new planet where YOU are the alien! The first time I heard about Planet Choom, we'd been on Mars for almost a year. But life on the Mars station was grim, and since Earth was no longer an option (we may have blown it up), it was time to find a new home. That's how we ended up on Choom with the Zhuri. They're very smart. They also look like giant mosquitos. But that's not why it's so hard to live here. There's a lot...