When the aliens evolve, so does the threat against humanity in this thrilling sequel to Scorpio that finds Alex Archer in an epic battle of survival against the odds and the alien invaders.

Alex Archer is a soldier now, the only civilian survivor from Scorpio to join the NAC Defense Corps. With their training complete, Alex and her friend Private Isa Cressey find themselves on emergency combat deployment with their new unit. The destination is the Alpha Corvi system, where an allied warship has vanished. Alex can guess why.

Her fears prove true—Alpha Corvi is under new ownership. Alex must face the monsters from her childhood again as her regiment mounts a rescue operation to find and save the planet’s colonists. But this time, there is something terrifyingly different about their enemy. The Corps has evolved to meet the threat, but the Lankies have adapted as well—and they are more lethal than ever. What began as a rescue turns into a desperate fight for survival for Alex and her new friends, stranded on a hostile world forty-nine light-years from Earth. And the only way home goes right through the Lankies.

Marko Kloos is the author of three military science fiction series: the Palladium Wars, which includes Aftershocks and Ballistic; the Frontlines series, which includes Orders of Battle and Centers of Gravity; and Frontlines: Evolution, which includes Scorpio. Born in Germany and raised in and around the city of Münster, Marko was previously a soldier, bookseller, freight dockworker, and corporate IT administrator before deciding that he wasn’t cut out for anything except making stuff up for fun and profit. A member of George R.R. Martin’s Wild Cards consortium, Marko writes primarily science fiction and fantasy―his first genre loves ever since his youth, when he spent his allowance on German SF pulp serials. He likes bookstores, kind people, October in New England, fountain pens, and wristwatches. Marko resides at Castle Frostbite in New Hampshire with his wife, two children, and roving pack of voracious dachshunds. For more information, visit www.markokloos.com.