Retrogression Keeper Books in Order
Below you'll find the complete list of Retrogression Keeper books in publication order. This is generally the recommended reading order for the series.
Reading order verified: January 2026
Publication Order
The Lone Keeper
Buy on Amazon2025
The Alternate Keeper
Buy on Amazon2025
Frequently Asked Questions
The recommended reading order for the Retrogression Keeper series is publication order: 1. The Lone Keeper (2025), 2. The Alternate Keeper (2025). This is generally the best way to experience the story as the author intended.
The Retrogression Keeper series by Jonathan Brooks contains 2 books. The series began in 2025 and continues to be a popular choice for readers.
The Retrogression Keeper series is written by Jonathan Brooks. You can find more books and series by this author on our website.
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