I thought this was a pretty good story. It centres around the Enterprise rescuing a ship from destruction. The leader of this vessel is Berlis, a telepathic alien whose abilities seem to have an unusual hold over Spock. It turns out that Berlis was left to die by his own people, and with Spock becoming more and more erratic under his influence, Kirk is left wondering if he did the right thing in saving Berlis.
All in all, an entertaining and interesting read. Worth a read for any fans of the original series and especially if you enjoy stories centred around Spock. A little complicated here and there but it all comes to make sense if you stick with the story.