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The United Federation of Planets and the Klingon Empire stand on the brink of war. Captain James T. Kirk and the Starship Enterprise are sent back to System 7348—site of a previous skirmish with the Klingons—for a confrontation with the I.K.S. D'k Tahg under the command of Captain Koloth.

Even as the two great ships face each other, trouble is brewing among their crews. On the Enterprise, Lieutenant Leslie Parrish is pregnant with a half-Klingon child and must face a critical decision about her future, while Section Chief Michael Fuller still carries the wounds of the twenty-five-year-old Battle of Donatu V, of which he was one of the few survivors—not to mention his grief over the death of his son, recently killed in battle against the Klingons.

On the D'k Tahg, First Officer Karel finds himself trapped between the scheming, dishonorable Councillor Duras and his commanding officer, Koloth. While the stakes only seem to be the possession of a single star system, the ramifications may spread throughout the Klingon Empire, as they find themselves at a crossroads between conquest and honor!

320 pages, Mass Market Paperback

First published January 30, 2007

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About the author

Kevin Ryan

125 books21 followers
Kevin Ryan is an American writer of many Star Trek books and one episode. He has also written comic books and the novelization of the movie Van Helsing. He lives in New York with his wife and children.

Librarian Note: There is more than one author in the Goodreads database with this name.

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5 stars
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Displaying 1 - 13 of 13 reviews
Profile Image for Tommy Verhaegen.
2,984 reviews8 followers
July 5, 2017
Tension goes up when a lot of intentional and unintensional deceit goes on, both with the Klingans as the Federation. Action and excitement galore. No more time for psychological games (almost), but there is still a story behind the story. Main stage is taken by many characters each in their time and place. There is a clear build-up to a full scale war between Klingons and Federation, this seems unevitable. Great switching between Klingon and Federation viewpoints and scenes.
Profile Image for Graff Fuller.
2,101 reviews32 followers
December 29, 2025
Star Trek: Errand of Fury 02 Demands of Honor by Kevin Ryan

4.25 Stars

challenging emotional hopeful inspiring reflective sad tense

Medium-paced

Plot or Character Driven: A mix
Strong character development: Yes
Loveable characters: Yes
Diverse cast of characters: Yes
Flaws of characters a main focus: Yes

There is a dual POV in this story. One point of view is through Michael Fuller. A Starfleet officer who comes out of retirement...to "avenge" his son's death, but to also stand in the breach...where his son should've been, for war is imminent. 

The other point of view is from Karel, who is definitely "avenging" his brother's honour...and to kill the man (if he can find him), who set his brother on a honourless path (which Kell filled with honour...from within).

There were other points of view in this story, but the two above...were the primary portions of this story. 

What makes this different from all the others in these two trilogies written by Kevin Ryan, is that they are both on the side of RIGHT, but depicted with one within Starfleet and the other depicted within the Klingon Defense Force.

I didn't think we'd get much of Parrish, and if I'm honest, we got more than I thought, but now I hope that we get even more in the third and final book.

What will happen on 7348? what will happen with Adon as its leader? What will happen moving forward on the Enterprise's Security team. Also, how will/is it possible to avert war, especially while the stink of dishonour still lays rotting within the Klingon High Council. 

There is ONE name that still resonds in these books...that I keep reading, and wondering how it will reveal itself in the future (which we know of), the House of Gorkon. Yes, indeed. Is this when this House finds its prominence? If so...it will definitely be interesting. Hmm.

It will be interesting how this will play out...in the final book Star Trek: TOS: Errand of Fury 03 Sacrifices of War.
94 reviews
May 9, 2024
The Enterprise and the D'k Tahg return to System 7348 in an attempt to resolve the conflict which began in the Errand of Vengeance series. Narrowminded pride and egotistical deceit threatens war between the Klingon's and the "Earthers" and Ambassador Fox has his work cut out for him. In the final conflict in System 7348, Klingons and humans work together to usurp the assault on Klingon honor and the destruction of the dilithium mine. Once again, Michael Fuller plays an important role in the resolution. Again, a fast-paced quick read with good characters and little in-side 'nods' that those familiar with Star Trek will appreciate. Unfortunately, some of the actions that take place on the planet don't ring true with the values I believe Starfleet - and especially Captain Kirk - would hold. Also, the Klingon Councillor Duras' desire to destroy a potentially rich source of dilithium when war is looming seems illogical - not to mention that the way he gains control of the D'k Tahg seems very dishonorable.
Profile Image for Gilbert Stack.
Author 97 books78 followers
August 15, 2018
The second book of the Errand of Fury trilogy picks up right where the first book leaves off. Most of it is a fairly typical Star Trek adventure, rescuing civilians and struggling to counter Klingon tactical moves surrounding a planet on the edge of Federation space. An internal struggle between Klingons on the path of honor and a councilor interested only in his own power adds to the tension, as does the fact that the population of the planet that is the focus of the Klingon maneuvering is biologically Klingon, but not part of the empire. This causes difficulty for Security Chief Michael Fuller and his plan to avenge himself on the Klingons who killed his son as he begins to question whether or not all Klingons deserve to suffer his revenge. It’s not as strong a novel as the first book, but it’s an enjoyable read.
Profile Image for Daniel Kukwa.
4,765 reviews125 followers
July 26, 2025
The umpteenth use of the Duras family gets rather tiring, so the Klingon ship-set side of the plot feels rather old-hat, but the rest of the novel offers a great deal of payoff, both in terms of battles and emotional release. In particular, it takes great pains to show that Kirk & the Enterprise are not invincible, taking a hammer to the cliche of his legendary status and making him very human. Let's call this a solid 4.5 stars.
38 reviews
July 17, 2019
Fab

Really loved this book. Read the first book in the series and thought it was great but this one is even better. I look forward to reading the last in the trilogy.
Profile Image for David King.
376 reviews12 followers
December 22, 2014
"Demands of Honor" is the second novel in Kevin Ryan’s “Errand of Fury” trilogy which continues to explore the build up to a Klingon-Federation War briefly ignited in the Original Series episode “Errand of Mercy”. In this novel we get to see Kirk and the Enterprise being sent back to System 7348, a world inside Federation Space that is home to a lost Klingon colony. Their aim is to oversee a diplomatic mission from the Klingon Empire who are determined to reach out to their newly discovered brothers in the hope of claiming a key system inside Federation space and gaining access to the Dilithium present there.

I particularly enjoyed this middle book in the trilogy as we got to discover more about the Klingons living in System 7348. The primitive culture created by Ryan is very well written and there is action a plenty as would be expected when Klingons are involved. There is also a sense of danger because this society is new to Star Trek lore and therefore I had no idea if some of these wonderful characters may actually perish in amongst the action. It is actually quite nice to read a Star Trek novel where there is a real sense of not knowing in regards to characters that are actually reasonably prominent.

The “lower deck” characters from the previous novels continue to be the main focus of the novel however and I have now grown to like Michael Fuller, the new “redshirt” character introduced in the previous novel. His drive, motivation and background have now been built up to the point that I found myself really engaging in his journey which is full of twists, turns and a few heartfelt surprises.

One thing I did note is that the main crew members felt even more pushed into the background with this novel. They are there and get some important roles in the story but I found they were even less prominent than they have been in Ryan’s other novels of this series.

Overall, this is a thoroughly enjoyable novel which captures more of the feeling from the previous trilogy that its predecessor “Seeds of Rage” did. If you have read the previous novels you will not be disappointed and I am anticipating Ryan’s final novel in the series with great hope.
Profile Image for Jennifer Nanek.
661 reviews4 followers
February 3, 2017
I don't get to read Star Trek books that often, but I certainly enjoy it when I do. This one was very enjoyable. It's about a planet in the Klingon territory that is relatively primitive. And of course, the Klingons and Federation are trying to fight for control of it and its resources. And as usual the Primitive people are influenced both in positive and negative ways. The book does not primarily feature the main Enterprise crew as we know them. They're in the story but they're not THE story so to speak. The story mainly concerns a security team, a bunch of red shirts really who don't die, and the Klingons including Klingons that live on the planet. It's a story about vengeance, learning to trust each other and making the best decisions for the future. This particular book is part of a Trilogy. I didn't get to read the first or the third book just this one by itself. But that's okay.. I enjoyed it very much.
Profile Image for Mikael Kuoppala.
936 reviews37 followers
January 21, 2014
The "Errand of Fury" trilogy reaches its second novel with "Demands of Honor," a direct continuation to the previous book "Seeds of Rage".

The same dryness and simlistic yet extensive analysis that plagued the previous outing still remain in effect here. There's a lot of potential here, the characters are interesting and the political subject matter fascinating, but Ryan doesn't innovate enough. He writes solid, by-the-book prose, but his text as a whole lacks an artistic dimension I expect from a good Trek novel.

Interesting to see how he will conclude his saga in the next book, though.
Profile Image for Joe.
1,246 reviews17 followers
September 17, 2014
What a fun Star Trek read.
All of the brigde crew play a part..
This story isn't really about them. Well about the Enterprise.
This one is about the clues. And other members of the Crew.

Read them
Profile Image for Judith Paterson.
420 reviews3 followers
December 14, 2014
Like the way it changes perspective from Klingon to primitive Klingon to Starfleet to diplomats.
Profile Image for Kirk Domenico.
65 reviews14 followers
April 1, 2016
Με αυτο εγιναν 500 τα Star Trek βιβλια που εχω διαβασει.
Displaying 1 - 13 of 13 reviews

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