A Letter to the Luminous Deep

BOOK SERIES

The Sunken Archive

Sylvie Cathrall

2 main books

Duology.

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Books in the series

Books in reading order

A Letter to the Luminous Deep#1 · 2024A Letter from the Lonesome Shore#2 · 2025

SERIES PUBLICATIONS

Publication timeline

Main-series books by publication year. Unconfirmed TBA dates are excluded.

2024–20252 dated main books