While exploring the remnants of an ancient civilization, Kirk and Chekov fall through these alien "windows" and land into another world. There they are transformed into these strange, crab-like aliens without the ability to talk. Spock and McCoy race to save the day!
Unfortunately, I do not have much to say because it was a while when since I have read this. However, I can tell you that it started off very slow, but by the middle I was reading through it very quickly. I thought the trio of Kirk, McCoy, and Spock in this novel were portrayed accurately. There are a couple of characters introduced, but none that are worth mentioning.
While humor is minimal, and this book does nothing to tie in Star Trek history - it is merely a simple story, you have my recommendation to read it. For me, it was a gift - and I am not sure I would of paid for it otherwise. I suspect those who are die-hards of The Original Series from the sixties would appreciate this book as it stays true to the timeline.