Dizi Adı: Threshold
Bölüm Adı: Trees Made of Glass (2)
Sezon/Bölüm: 1. Sezon 2. Bölüm
Yayın Tarihi: 16 Eyl. 2005

Gunneson reappears in Caffrey’s house. Meanwhile, Lucas, Nigel and Ramsey try to break down how the alien signals and DNA operate and come up with some interesting theories. Cavennaugh’s team tries to locate Gunneson other shipmates.