Threshold - Trees Made of Glass (2)

Seizoen: 1 - Aflevering: 2 / 3 - Eerst uitgezonden: 16 september 2005 - Episode ID: 346196

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.