After erratic climate change has made Earth a dangerous place to live, the fate of the population rests on the shoulders of the final six who will be scouting a new planet. Intense training, global scrutiny, and cutthroat opponents are only a few of the hurdles the contestants must endure in this competition.For Leo, the prospect of traveling to Europa—Jupiter’s moon—to help resettle humankind is just the sense of purpose he’s been yearning for since losing his entire family in the flooding of Rome. Naomi, after learning of a similar space mission that mysteriously failed, suspects the ISTC isn’t being up front with them about what’s at risk.As the race to the final six advances, the tests get more challenging—even deadly. With pressure mounting, Naomi finds an unexpected friend in Leo, and the two grow closer with each mind-boggling experience they encounter. But it’s only when the finalists become fewer and their destinies grow nearer that the two can fathom the full weight of everything at stake: the world, the stars, and their lives.

    Her father was the world's leading geneticist, and humanity's best hope of beating a devastating virus. Then, hidden beneath Cole's genehacked enhancements she finds a message of hope: Lachlan created a vaccine.Only she can find and decrypt it, if she can unravel the clues he left for her. The closer she gets, the more she finds herself at risk from Cartaxus, a shadowy organization with a stranglehold on the world's genetic tech. But it's too late to turn back.There are three billion lives at stake, two people who can save them, and one final secret that Cat must unlock. A secret that will change everything.