The Magos occupies an interesting and slightly awkward position in Dan Abnett’s Warhammer 40,000 canon. It is neither a straightforward sequel nor merely a short story collection, but something in between: a substantial novel framed and contextualised by a series of shorter works. The result is a hefty volume that feels less like a single dramatic statement and more like a connective tissue binding together different eras of Eisenhorn’s long and increasingly troubled life.
The book is structured around a core novel, The Magos, supported by a collection of short stories written over many years. Most of these stories focus on Gregor Eisenhorn or the consequences of his actions, reintroducing important characters and narrative threads while quietly laying groundwork for what comes later. Some of them feel supplemental, but a few are essential to appreciating the book as a whole.
Chronologically, The Magos takes place decades after the end of Hereticus, roughly a century later. Eisenhorn is no longer merely controversial—he is officially declared a heretic. And yet, true to form, he continues his private crusade against the enemies of mankind, operating from the shadows and pursuing what he believes to be a greater good. The book leans heavily into the ambiguity of that belief.
One of the most notable differences from the original Eisenhorn trilogy is the shift in point of view. The Magos is not told in Eisenhorn’s own voice. This is both its greatest strength and its most obvious risk. Losing Eisenhorn’s internal narration means losing some of the intimacy that made the earlier books so compelling. At the same time, the external perspective raises the tension considerably. When Eisenhorn is no longer explaining himself, the reader is forced to confront the possibility that he may truly have gone too far—that some invisible but crucial line has been crossed.
Two recurring characters anchor much of the book: Gideon Ravenor and Magos Valentin Drusher. Ravenor’s presence serves as a reminder of Eisenhorn’s legacy. Having already been an intriguing figure in the original trilogy, his appearances here help bridge the gap to Abnett’s Ravenor trilogy, which takes place in the long stretch of time between the Eisenhorn books and The Magos. Reading these stories made me far more interested in finally picking up Ravenor in full.
Magos Valentin Drusher, however, is the real revelation. Introduced in The Curiosity and The Gardens of Tycho, and playing a central role in The Magos itself, Drusher is refreshingly human. He is not a hardened interrogator, a battle-scarred inquisitor, or a superhuman agent of the Imperium. He is thoughtful, fallible, and recognisably human in a setting that too often defaults to grim archetypes. These stories were easily my favourites in the collection, and Drusher’s perspective grounds the narrative in a way that Eisenhorn himself no longer quite can. I sincerely hope Abnett chooses to revisit him.
Taken as a whole, The Magos feels less like a dramatic leap forward and more like a consolidation. A great deal happens, relationships shift, and long-term consequences are clarified, but the book’s primary function is connective rather than transformative. It draws lines between past and future, reframing Eisenhorn’s journey rather than redefining it.
The short stories are not all strictly necessary, but the Drusher-focused ones in particular elevate the entire volume. Without them, The Magos would feel slimmer, colder, and more distant. With them, it becomes something richer: a meditation on legacy, compromise, and what remains of a man once certainty is gone.
If nothing else, The Magos stands as a reminder that in Abnett’s hands, Warhammer 40,000 is not just about war, heresy, and corruption—but about the slow erosion of conviction, and the cost of believing too strongly for too long.