I just completed my re-read of "The Klingon Gambit", released 10/1981. It takes place around Stardate 4720 and Memory Beta puts the time frame around 2268 which sounds about right. It has been years since I read this and I didn't remember a thing about it.
The Enterprise is sent to Alnath II, and on route they encounter a ship full of dead Vulcans. Once they reach Alnath II they meet up with a Klingon dreadnought ship which apparently is capable of destroying the Enterprise, called the Terror (a bit obvious of a name but there you go
). Once they reach the planet the meet up with an excitable Andorian archaeologist, Threllvon-da, who only cares about his new discovery of an apparent ancient society and a mysterious pyramid on the surface. The Klingons are making trouble, of course, and we learn later they mostly care about mining the planet for topaline, which is used in their life support systems (I recall hearing about topaline at some point during the TV series IIRC).
Mysterious things start to happen to the crews of both ships. The Klingon captain has to deal with a number of mutinies while Kirk has to deal with Scotty and his assistant who are obsessed over increasing the warp drive efficiency by removing other ship components, McCoy distrusts his machines to the point he actually sews up a wound and resorts to primitive medicine techniques, Chekov has a happy trigger finger, Kyle takes up sculpting while in duty, and Spock shifts between emotionalism and total logic as he is pursued by a love sick assistant. This reminds me of the 2nd season Enterprise episode "Singularity" where the crew become obsessed with trivial matters.
Also, once they discover a city below the pyramid Kirk discovers after a fire fight with the Klingons that the city, after being damaged, self repairs itself, which reminded me a bit of the Borg. Eventually Captain Kirk must engage in some diplomacy once he suspects the cause of his crews behavior before he is able to set things right.
The Klingons are depicted much like one would expect, being that the book was written before even TWOK was released. Though Vardeman a few times notes a certain code of honor among the Klingons, even using the word 'honor' a few times in the novel when discussing the Klingons. But it is a basic form of honor. And honestly, even as treacherous as the Klingons were originally designed to be, they would have to have some code they followed or their entire society would degenerate into anarchy. And being that they were depicted as a martial society, some code of honor would seem to fit. In some ways the Klingon captain reminded me a bit of Kang. Warlike, itching for a fight, but not foolishly so. He's smart enough to know where his best interests lie, and he seems to have a grudging respect for Kirk (though he says otherwise).
Anyway, overall, I found the book to be about average for the era (judging against many current books it would rate probably below average, but I want to be fair and compare it to other books of the era). It did enough to keep my interest, it's better than many of the Bantam era books (which isn't saying a whole lot I suppose). It has the basic things you'd expect out of a book, a problem, a number of issues that arise, the crew must overcome that problem and the problem is solved. It's the kind of book you read, finish, put back on the shelf and probably forget about a year later.
It's always interesting to read books of this era, when there was much more of an open canvas. His depiction of the Klingons seems in line with what we knew at the time for instance.
I was curious to see Kirk leave Ensign Chekov in command when Lt. Uhura was on the bridge. Vardeman did clarify Kirk did this to give Chekov some experience at the conn, but it does seem odd. Doesn't Uhura need some experience in command as well? I thought this a bit unusual. But I guess we did see Ensign Kim in command on Voyager, though overnight. But it would have been nice to see Uhura at the conn maybe at some point.
Anyway, I decided next to re-read Vardeman's other novel "Mutiny On the Enterprise". I have read this one just a few years ago and do recall a few elements of that novel, like Lorelei and her effect on the crew. I just started that one and am up to Chapter 3 and he did write this basically as a sequel to "The Klingon Gambit"--some of the officers he created there reappeared already, and the mission to Alnath II was briefly mentioned.
The Enterprise is sent to Alnath II, and on route they encounter a ship full of dead Vulcans. Once they reach Alnath II they meet up with a Klingon dreadnought ship which apparently is capable of destroying the Enterprise, called the Terror (a bit obvious of a name but there you go

Mysterious things start to happen to the crews of both ships. The Klingon captain has to deal with a number of mutinies while Kirk has to deal with Scotty and his assistant who are obsessed over increasing the warp drive efficiency by removing other ship components, McCoy distrusts his machines to the point he actually sews up a wound and resorts to primitive medicine techniques, Chekov has a happy trigger finger, Kyle takes up sculpting while in duty, and Spock shifts between emotionalism and total logic as he is pursued by a love sick assistant. This reminds me of the 2nd season Enterprise episode "Singularity" where the crew become obsessed with trivial matters.
Also, once they discover a city below the pyramid Kirk discovers after a fire fight with the Klingons that the city, after being damaged, self repairs itself, which reminded me a bit of the Borg. Eventually Captain Kirk must engage in some diplomacy once he suspects the cause of his crews behavior before he is able to set things right.
The Klingons are depicted much like one would expect, being that the book was written before even TWOK was released. Though Vardeman a few times notes a certain code of honor among the Klingons, even using the word 'honor' a few times in the novel when discussing the Klingons. But it is a basic form of honor. And honestly, even as treacherous as the Klingons were originally designed to be, they would have to have some code they followed or their entire society would degenerate into anarchy. And being that they were depicted as a martial society, some code of honor would seem to fit. In some ways the Klingon captain reminded me a bit of Kang. Warlike, itching for a fight, but not foolishly so. He's smart enough to know where his best interests lie, and he seems to have a grudging respect for Kirk (though he says otherwise).
Anyway, overall, I found the book to be about average for the era (judging against many current books it would rate probably below average, but I want to be fair and compare it to other books of the era). It did enough to keep my interest, it's better than many of the Bantam era books (which isn't saying a whole lot I suppose). It has the basic things you'd expect out of a book, a problem, a number of issues that arise, the crew must overcome that problem and the problem is solved. It's the kind of book you read, finish, put back on the shelf and probably forget about a year later.
It's always interesting to read books of this era, when there was much more of an open canvas. His depiction of the Klingons seems in line with what we knew at the time for instance.
I was curious to see Kirk leave Ensign Chekov in command when Lt. Uhura was on the bridge. Vardeman did clarify Kirk did this to give Chekov some experience at the conn, but it does seem odd. Doesn't Uhura need some experience in command as well? I thought this a bit unusual. But I guess we did see Ensign Kim in command on Voyager, though overnight. But it would have been nice to see Uhura at the conn maybe at some point.
Anyway, I decided next to re-read Vardeman's other novel "Mutiny On the Enterprise". I have read this one just a few years ago and do recall a few elements of that novel, like Lorelei and her effect on the crew. I just started that one and am up to Chapter 3 and he did write this basically as a sequel to "The Klingon Gambit"--some of the officers he created there reappeared already, and the mission to Alnath II was briefly mentioned.