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Belisarius Cawl · Book 3

Archmagos

by Guy Haley
Published
21 November 2025
Pages
384
ISBN-13
9781836094012
Type
novel
Buy on Amazon All Belisarius Cawl books in order
Cover of Archmagos

About this book

Archmagos closed the trilogy on 21 November 2025 at 384 pages, with Cawl racing to secure ancient necron control codes as Roboute Guilliman's window to act narrows.

Key facts about Archmagos

Archmagos is a novel by Guy Haley. Readers have had it since 21 November 2025. It runs to 384 pages.

Our list holds 2 editions of Archmagos. Since each edition has its own ISBN, search for 9781836094012 to find the main one.

Archmagos is book 3 of 3 in the Belisarius Cawl series. The series has 3 published books. However, the series starts with Belisarius Cawl: The Great Work (2019). It is also the latest book in the series with a full release date.

Additionally, Guy Haley writes The Horus Heresy, Richards & Klein and Dreaming Cities, plus 1 more series. Those series sit on our science fiction and science fantasy shelves. It is also the latest published Guy Haley book on file.

About Guy Haley

Guy Haley is an English writer of speculative fiction, born in Halifax, Yorkshire in 1973. Before turning to fiction full-time he worked as a magazine editor and writer for SFX, White Dwarf and Death Ray, giving him an insider's grounding in genre fandom and gaming culture. See every Guy Haley book in order.

Its place in Belisarius Cawl

Archmagos is book 3 in the Belisarius Cawl series. It follows Genefather. See the full Belisarius Cawl reading order.

The Belisarius Cawl trilogy follows the Adeptus Mechanicus' most brilliant and heretical Archmagos -- creator of the Primaris Space Marines and secret architect of much of the Imperium's modern military resurgence -- as he pursues his self-appointed "Great Work": a millennia-spanning plan to save humanity that answers to no one, not even the Emperor. Belisarius Cawl: The Great Work (2019) sends Cawl to the dead world of Sotha in search of a lynchpin technology for his plan; Genefather (2023) pits him against his…

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