Miasma
Miasma is a Pocket TOS eBook novella written by Greg Cox. Published by Pocket Star Books, it was first released in .

Summary 
From the book jacket
The Enterprise-A is transporting a party of diplomats when it picks up a mysterious alien signal emanating from a nearby world. The planet's dense, impenetrable atmosphere makes it unclear if the beacon is a distress signal, an invitation – or a warning to stay away. Spock, Doctor McCoy, and Chekov are part of a team sent to investigate, but an unexpected catastrophe forces a crash landing. Now the landing party is stranded on a hostile world, unable to communicate with the Enterprise. While Captain Kirk and Saavik race to locate the lost crew, a badly wounded Spock struggles to keep McCoy and the others alive until they can be rescued, even if that means making an unthinkable sacrifice...

Background information 
 Cover art by Tobias Richter.

External link 
 

eBooks