I enjoyed the idea of a Martian colony, of the kids sneaking around and getting in trouble like kids do, and of the various catastrophes that befell the duo as they attempted to save their parents and get to the colony ship before it left orbit. The big, hidden, twist in the plot that made things complicated at the end, however, seemed a bit much for a kids' book. In an adult novel, there would have been more room to address this twist; in this kids' book, it seemed like a bit of a stretch.
Recommended for: tweens
Red Flags: "fantasy violence" - people nearly dying, etc.
Overall Rating: 4/5 stars
Read-Alikes: The Silver Six