Date not given: Enterprise picks up signs of a Vulcan ship in distress. The Seleya is adrift inside an asteroid field with high Trellium concentration. When a team boards the ship, they discover that the crew have gone insane. The boarding party is cut off from the shuttle by the ravaging Vulcans, and T'Pol soon exhibits the same symptoms. In the meantime Phlox has analyzed their condition and determined Trellium-D as the cause. After their return, he manages to restore T'Pol's synaptic pathways.

• E04 Previous
• E06 Next