I thought this was quite well done. T'Pol is instructed by the Vulcan high command to go after a man who years ago went rogue after spying on a culture that was dangerous to Vulcan. He and some of his confederates were sought out by Vulcan patrols to be brought back. T'Pol was give seven of them to return, but in the process of bringing them back, two escaped. But something happened on Reisa (Sp?). T'Pol has had some sort of mental reconstruction to repress her emotions after she killed someone on the planet. She is now filled with guilt about what happened and the man she is seeking, who is suspected of selling biotoxins uses her guilt to manipulate her. I thought this was very exciting and a plot that was clever and well written. It also continues to tell the story of the Vulcans and some of their weaknesses as they attempt to evolve.