The Blood-Dimmed Tide
The Blood-Dimmed Tide is a Pocket TOS eBook – the fifth book in the Mere Anarchy series – written by Howard Weinstein. Published by Pocket Books, it was first released in .

Summary 
From the book jacket
Twenty-five years after the disaster, Mestiko's recovery is stagnating amid social unrest. A lunar colony designed for scientific research might give the people hope – until a local terrorist group called the Torye attacks the colony and steals an experimental subspace weapon. The Starship Enterprise is sent to find the Torye and retrieve the weapon.

But even as Captain Kirk and his crew – Saavik, Scotty, Chekov, Uhura, and McCoy – follow the trail, Captain Spock goes on a daring undercover mission to Klingon space that will have dire consequences for the future of Mestiko – as well as the Federation...

Background information 
 The novella takes place between the events of  and  setting it between 2289 and 2290.

External link 
 

Blood-Dimmed Tide