SeriesStack

Frontlines: Evolution Books in Order

by Marko KloosScience Fiction & Fantasy

2 books so far (book 3 is due December 8, 2026). They run from Scorpio (2024) to Corvus (2025). Rated 4.5 across 657 listener reviews.

Next Frontlines: Evolution book

Cygnus

Book 3 · out December 8, 2026 · preorder now

Kindle Paperback Audiobook

Reading order

  1. Scorpio

    Book 1 2024 4.3 (405)

    On a distant Earth colony, an orphaned survivor of an alien invasion discovers that the greatest world-ending dangers aren’t behind her.

    Kindle Paperback Audiobook

  2. Corvus

    Book 2 2025 4.7 (252)

    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.

    Kindle Paperback Audiobook

  3. Cygnus

    Book 3 Out December 8, 2026

    In this explosive conclusion to the Frontlines series, Special Operations soldier Alex Archer must lead her elite team on an impossible rescue mission—deep into alien territory where one mistake means extinction for humanity.

    Kindle Paperback Audiobook

About this reading order

Books are listed in the series' own numbering, which for Frontlines: Evolution is also the best order to read them in. Years are first publication where we could confirm it, and otherwise the first audiobook release.

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