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

A mysterious alien object attacks a Naval ship and crew. Dr. Molly Anne Caffrey, a government contingency analyst, is contacted by the Deputy National Security Advisor, J.T. Baylock, to investigate the incident along with a special scientific team of her choice.