Clara’s Verdict
Glynn Stewart is one of the more reliable writers working in self-published military science fiction and space opera, and the House Adamant series has developed a clear and loyal audience over its first four books. Broken Prince is Book 5, arriving after the civil war that dominated the preceding instalments has concluded. The challenge for any author at this point in a series is the post-crisis novel: what do you do with characters whose defining conflict has ended? How do you sustain momentum without either inventing a crisis that feels contrived or letting the narrative lose direction entirely?
Stewart’s answer is to send Nikola Adamant – previously secondary to his sister Lorraine in the main narrative – into genuinely new territory with a new ship, the AI-crewed Bonnie, and a new set of problems that are distinct from the civil war that preceded them. There is a secret wormhole to locate, pirate incursions on the frontier to manage, Directorate bases to uncover, and the lingering influence of Benjamin’s followers still causing disruption across the Kingdom’s less-settled regions. It is, in other words, a competent military SF novel that does what readers of the series have come to expect while laying groundwork for whatever comes next. That is not a criticism. Stewart’s readers know what they are signing up for, and he delivers it with the consistency that a series five books deep requires.
About the Audiobook
Published by Faolan’s Pen Publishing in March 2026, Broken Prince runs to 14 hours and 20 minutes and carries a 4-star rating from a single Audible UK review. It is Book 5 in the House Adamant series. Nick Cracknell narrates. Stewart’s characteristic approach is consistent with the rest of the series: dense on starship logistics and tactical specifics, fast on action sequences, with character development as a sustained through-line rather than a primary focus. The Kingdom of Adamant’s political architecture, established in earlier books, continues to provide the structural framework within which individual missions acquire their significance.
A clear advisory applies here: this is not a book you can pick up without prior series knowledge. The civil war whose conclusion this book follows, the significance of the various political factions and their histories, the nature of Nikola’s relationship to the main Adamant family storyline, and the character relationships that give his new role its emotional weight – all of these require the context that Books 1 through 4 provide. Stewart does not write for readers joining at Book 5, and that is a reasonable authorial choice for a series this far into its run. Attempting to start here would be like beginning a television series in its fifth season: technically possible, but unlikely to produce the experience the work is designed to deliver.
The Narration
Nick Cracknell handles Stewart’s military SF prose with the competence that series fans will recognise from previous instalments. The challenge with this genre is maintaining listener orientation across large casts, complex tactical scenarios, and the competing claims of multiple simultaneous missions. Cracknell manages the distinction between characters clearly enough that the action sequences are followable, and he maintains consistency across the series’ extensive cast of recurring figures. He is not a narrator who brings distinctive theatrical character to each voice – his approach is clean and functional rather than performative – but in long-form space opera, that reliability is often the more valuable quality. The 14-hour runtime is handled without obvious fatigue.
What Readers Say
The sole Audible UK review comes from Kaznd33, who awarded four stars and offered a considered response. The reviewer had been initially uncertain whether shifting the primary focus to Nikola would work, given that he had been a less engaging character in earlier books than his sister Lorraine. The new missions – wormhole location, pirate response, Directorate intelligence work – provided enough material to justify the shift, though the reviewer noted some excess in the description of starship complements and tactical dispositions. That specific criticism will mean different things to different readers: for committed military SF fans, that level of technical detail is part of the appeal; for more casual readers, it may test patience.
Who Should Listen?
Read Books 1 through 4 of House Adamant first. This is not a series that accommodates late entry. For established series readers, Broken Prince delivers what the series has always offered: competent military SF with clear action, a defined moral universe, and the ongoing elaboration of a well-built fictional polity. Stewart is consistent and productive, and his readers know what they are getting.
Those new to Stewart have better entry points. His Castle Federation or Duchy of Terra series share the same qualities – methodical world-building, clean action sequences, reliable craft – and are designed to be read from the beginning. Starting there will give you a better sense of whether his style suits you before committing to a five-book investment in a separate series.
