Frontlines: Evolution Books in Order
Part ofMarko Kloos Books in OrderTrack the Frontlines: Evolution books by Marko Kloos in order, with summaries and background on Alex Archer’s life after the Lankie invasion.
Last updated: December 26, 2025
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Publication Order
3 books
Cygnus
by Marko Kloos
2026
In the final Frontlines: Evolution novel, Alex Archer and her comrades confront the Lanky threat at its most dangerous yet. A new deployment forces them to decide how much they are willing to sacrifice to protect the scattered remnants of humanity.
Corvus
by Marko Kloos
2025
Now a soldier in the NAC Defense Corps, Alex Archer deploys with her unit to investigate a missing warship in the Alpha Corvi system. The Lankies have claimed the colony, evolved new tactics, and turned a planned rescue operation into a brutal fight to escape alive.
Scorpio
by Marko Kloos
2024
On a remote colony hammered by a past Lanky attack, orphaned survivor Alex Archer lives in an underground shelter, running a trained shepherd dog on salvage runs. When one mission goes wrong and the aliens finally find them, survival means risking everything for her found family.
Series background & context
Frontlines: Evolution returns to the same universe as the main Frontlines novels but shifts the camera to a single battered colony and a very different kind of soldier. Eight years after a Lanky invasion devastated the world of Scorpio, a few hundred human survivors endure in an underground shelter, scavenging the surface for supplies while trying to stay invisible to the towering aliens that nearly wiped them out.
Alex Archer grew up in that bunker. Orphaned during the attack, she has carved out a role as a dog handler, working alongside Ash, a black shepherd trained to sense the telltale signs of Lanky activity. Life is harsh and regimented, but it is also full of small, stubborn moments of normalcy: shared meals, makeshift entertainments, and the quiet bonds between soldiers, technicians, and civilians who know one another too well.
In Scorpio, a routine salvage run goes very wrong, drawing Lanky attention back to the settlement and shattering the fragile illusion that the colony can simply hide until help arrives. Alex and her close circle of friends are forced into choices that pit personal safety against the survival of everyone left. The book mixes tense ground level encounters with a slow dawning realization that no rescue fleet is coming in time.
Corvus moves Alex into the wider war. As the only civilian from Scorpio accepted into the North American Commonwealth Defense Corps, she trades the claustrophobia of the bunker for the shock of formal military training and then an emergency deployment. Her unit is sent to the Alpha Corvi system, where a quiet colony and an allied warship have gone dark. There she finds that the Lankies are not standing still; they are adapting in unsettling ways.
The planned final volume, Cygnus, is set up as the point where Alex’s journey, the evolved Lanky threat, and humanity’s lingering trauma from the war all collide. Throughout the series, though, the emphasis stays on Alex as a person: her bond with Ash, her complicated loyalties, and her struggle to build a future that is more than just another tour on the front line.
Readers who enjoy the hardware and universe of Frontlines but want a tighter, more survival focused story get that here, in books that balance tense action with quieter scenes about friendship, loss, and what it means to grow up in the shadow of an apocalypse.
Edited by
Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.
Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

















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