This is a very short and enjoyable read that captures that nostalgic feel of the old series, where the characters come to life as they unravel the mystery of a secret organization with the "means and the motive" to carry out its agenda. Section 31 plays a background role here, as it works under the cloak of secrecy; major hints are put out as to how it operates in this time period, but nothing precise or revealing is documented.
I liked how the author delved into the personas of various characters, such as insights about Kirk's love affairs, McCoy's internal struggle with a terminal disease, and Spock's struggle to hold on to order when confronted with passionate feelings for a Romulan commander. We also view the typical Chekov traits on his colorful and naïve views for romance and his profound Russian pride; and we get a view of Uhura's background as she uses her little renowned cryptographic skills when she attempts to decode a disk.
With combination of Kirk's intuition and inquisitive nature to get to the truth and Spock's logical and thorough investigation and reasoning, combined with some luck, they are able to unravel the plot and prevent a catastrophe. In the end a major and extremely important clue is dropped as to how Section 31 came to exist.
Overall this is an enjoyable piece and very well written. I couldn't put the book down. I hope they come out with more books about Section 31, and I also hope to see more works by this author.