Archer and T'Pol encounter the Syrrannites, a radical group hiding in the Vulcan desert, while the Enterprise crew contends with Vulcan power ploys.

Robert Foxworth (Administrator V'Las)
Gary Graham (Ambassador Soval)
John Rubinstein (Minister Kuvak)
Bruce Gray (Surak)
Kara Zediker (T'Pau)
Joanna Cassidy (T'Les)

• Part 2 of 3.
  
• An older T'Pau appeared in the classic episode "Amok Time".
  
• The High Command dismisses Soval for his actions in the previous episode.
  
• The Syrannites follow the true teaches of Surok, the founder of Vulcan society. Arev, who died in the previous episode, was actually Syran, the leader of the Syrannites. Syran carried the katra of Surak. Before he died, he transferred the katra to Archer.
  
• Surak is considered the father of modern Vulcan society. 1800 years ago, he died from sickness due to the radiation fallout of the war with those who march "beneath the raptor's wings" (i.e., Romulans).
  
• T'Pol's mother T'Les dies in the attacks on the Syrrannites.
  
• The Syrannites are pacifists — war and violence are against their beliefs. By eliminating them, V'Las won't have opposition when he starts a war with Andoria.
  
• Dr. Phlox does not appear in this episode.
  
• This is the 10th (and final) episode directed by Roxann Dawson (B'Elanna Torres).