Where can I watch “Threshold” Season 1 Episode 1 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch Threshold Season 1 Episode 1 Online

“Trees Made of Glass (1)” — Watch "Threshold" Season 1 Episode 1 online in HD for free. Check streaming providers, cast, and episode details.

Sep 16, 2005 Season 1 Episode 1 41 min

7.5 ★ ★ ★ ★ ★

6 votes

Threshold Season 1

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Season 1 Episode 1 — Aired on Sep 16, 2005 • runs about 41 minutes.

Directed by David S. Goyer.

Written by Bragi F. Schut.

Notable cast/guest names in this episode include Carla Gugino, Brian Van Holt, Brent Spiner, Rob Benedict.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch Threshold Season 1 Episode 1 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

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.