Scorpio
On a distant Earth colony, an orphaned survivor of an alien invasion discovers that the greatest world-ending dangers aren’t behind her.
It’s been eight years since an alien invasion drove a small surviving group of settlers to seek refuge in an underground shelter. Cut off from the rest of humanity, the ragtag band has maintained a narrowly functioning colony due to communal effort and salvage runs. Alex Archer has her own duties as a dog handler. While this off-world colony may be harsh, Ash, Alex’s black shepherd raised to sense threats, makes living in it a little nicer.
But the tenuous hide-and-seek with the monstrous species known as the Lankies is about to come to an end for Alex and her close-knit crew of soldiers, techs, and friends. When a salvage operation goes catastrophically wrong, the Lankies home in on the humans.
With hopes of a rescue long faded, all Alex has left is will—and the fear that there’s so much more to lose.
Marko Kloos
Marko Kloos has built a reputation in the world of military science fiction by weaving complex narratives where war, politics, and the human condition collide against the backdrop of interstellar conflict. A writer whose career is as multifaceted as his stories, Kloos' journey from his native Germany to the United States is one of both personal reinvention and creative discovery.
Growing up in the small town of Münster, Germany, Kloos developed an early love for science fiction, delving into the works of authors who would later inspire his own storytelling. His first passion, however, wasn't writing—it was military service. He spent time as a junior NCO in the West German military, which would later seep into his stories, giving them a grounded, authentic touch. After the military, Kloos tried his hand at several professions, including bookselling and IT administration, before settling into life as a full-time writer.
Frontlines: Evolution
In a universe where humanity's last vestiges cling to life on a war-ravaged colony, Frontlines: Evolution invites readers to explore a gripping tale of survival, loyalty, and the quest for identity. Set eight years after the cataclysmic Lankie invasion, this series begins with Alex Archer, a young woman caught in the balance between her role as a defender and the emotional turmoil that comes with rebuilding in the shadow of destruction. With Ash, a dog trained to detect the alien threat, by her side, Alex faces the complex challenge of holding onto hope when the world seems poised to break.
Frontlines: Evolution consists of two books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

