SeriesStack

Retrogression Keeper Books in Order

by Jonathan BrooksScience Fiction & Fantasy

3 books from The Lone Keeper (2025) to The Final Keeper (2026). Rated 4.6 across 188 listener reviews.

Reading order

  1. The Lone Keeper

    Book 1 2025 4.6 (99)

    What happens when a new Keeper recruit inadvertently eliminates not only the other recruits, but all of the teachers, as well? At first, when Bax suddenly found himself transported from Earth to an organization of powerful,…

    Kindle Paperback Audiobook

  2. The Alternate Keeper

    Book 2 2025 4.5 (60)

    The Lone Keeper has an entire world to protect, but that world is about to get a whole lot bigger…

    Kindle Paperback Audiobook

  3. The Final Keeper

    Book 3 2026 4.7 (29)

    After arriving in an alternate timeline with the intention of getting his Party member, Vintrella, back from the Spirit Sentinel Faction, Bax disturbs a hornet’s nest of politics and power and he has no intention of getting involved.

    Kindle Paperback Audiobook

About this reading order

Books are listed in the series' own numbering, which for Retrogression Keeper 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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