Three by Michael Jan Friedman
Like The Valiant, Three takes an element from TOS and imagines what might have happened to it in the years between Kirk and young Picard. In this case, the element is the mirror universe that Kirk visited via a transporter malfunction. Alternate histories and crossovers seem to be an irresistible element of the Star Trek canon, so I am not surprised to see it show up in Friedman’s Stargazer series.
The story was okay, but the plot and action did not move quite as dramatically as it has in previous books. Aside from providing more character development with the Asmunds and Ensign Nikolas, the book adds nothing to the story of the USS Stargazer and her crew.