"An original young adult novel of the Alien universe. Olivia and her twin sister Viola have been dragged around the universe for as long as they can remember. Their parents, both xenobiologists, are always in high demand for their research into obscure alien biology. Just settled on a new colony world, they discover an alien threat unlike anything they've ever seen. And suddenly the sisters' world is ripped apart. On the run from terrifying aliens,...

A space expert and a geology expert take readers on an out-of-this-world adventure to the moon, where they must navigate the dangerous terrain to clear up space debris before it can interfere with a lunar mission.

"For years Gregory Roarke and his Kadolian partner Selene worked as crocketts, combing through the atmospheres of uninhabited worlds for places that might be colonized or hold valuable resources. Now, they work for the Icarus Group, a top-secret government organization hunting for portals created by a long-vanished alien race, portals that can teleport a person hundreds or thousands of light-years in the blink of an eye. Usually, those hunts are long...