The Delta Codex
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The Delta Codex
Is there safety in silence?
In the city of Danak-Tol, children known as codexes are chosen to safeguard echoes—fragments of ancient knowledge too valuable to destroy but too dangerous to use. Forbidden to speak lest she accidentally release her echo, codex Delta lives a lonely life. Still, she knows she must obey the wardens’ strict rules to keep her home safe from the vicious beasts, heretical Scrappers, and toxic blood storms that lurk beyond the city walls.
But when Delta breaks her vows to help a young girl escape a blood storm, she begins to have strange dreams, which lead her to question everything she knows to be true about herself and her city. To find answers, Delta must journey to the one place she most fears: the wasteland beyond the walls of Danak-Tol.
Together with her small but feisty mechanical companion Flick, Delta dares the perilous ruins of a long-abandoned skyship, the gullet of a ravenous sphincter worm, and even befriends a young Scrapper named Drii. But all these adventures only lead to more questions. What is the true danger that threatens her entire planet—is it really her echo, or is it the silence that has imprisoned the truth for so long?
Book Details
INFORMATION
ISBN: 9781665963572
Publisher: Simon & Schuster
Format: Hardback
Date Published: 14 April 2026
Country: United States
Imprint: Atheneum Books for Young Readers
Illustration: f-c jkt (uncoated: fx: emboss, spot gloss UV); digital
Audience: Children
DIMENSIONS
Spine width: 25.0mm
Width: 140.0mm
Height: 210.0mm
Weight: 358g
Pages: 288
About the Author
Deva Fagan writes fantasy and science fiction for all ages. When she’s not writing, she spends her time reading, doing geometry, playing video games, hiking, and drinking copious amounts of tea. She is the author of several books, including Rival Magic, Nightingale, The Mirrorwood, A Game of Noctis, and The Delta Codex. She lives in Maine with her husband and their dog. You can find her online at DevaFagan.com.
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