archytele The Vault
Season guide

Threshold: Season 1

13 episodes Premiered Sep 16, 2005 Updated Oct 4, 2026
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Season 1 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 1 Progress Shield

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

23%
77%
Mytharc (3): Crucial lore & season climaxes
Core (10): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

Trees Made of Glass (1)

Sep 16, 2005 · 41 min

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. Bayloc

S1·E2 Core

Trees Made of Glass (2)

Sep 16, 2005 · 41 min

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. Cavenn

S1·E3 Core

Blood of the Children

Sep 23, 2005 · 41 min

When a man at a fast-food restaurant is found with his head imploded, Molly and her Red Team investigate and begin to suspect the involvement of a group of military cadets, and the

S1·E4 Core

The Burning

Sep 30, 2005 · 41 min

A patient at an psychiatric hospital in Ohio escapes and Molly believes he may have been infected by the alien signal after paintings of glass trees are found in his cell. After f

S1·E5 Core

Shock

Oct 7, 2005 · 41 min

After a shipyard gang bust, a suspected fugitive Big Horn crewmember kills a police detective. Molly and Cavennaugh go undercover as Homeland Security agents. Unbeknownst to them,

S1·E6 Core

Pulse

Oct 14, 2005 · 41 min

As the signal from the Big Horn invades a Miami rave, the team investigates who have been infected, trying to prevent the signal from spreading to the population.

S1·E7 Core

The Order

Oct 21, 2005 · 41 min

Molly and Cavennaugh investigate a newspaper leak regarding the Threshold program which might turn out to be an inside job. The Red Team look into a case of residents of a small to

S1·E8 Core

Revelations

Nov 4, 2005 · 41 min

Molly and Cavennaugh discover some strange happenings in a missing Big Horn crew member's hometown when they investigate the disappearance of a Threshold field agent.

S1·E9 Core

Progeny

Nov 22, 2005 · 41 min

When three women from completely different walks of life appear to be infected, Molly and the Red Team discover the connection among them and must locate the common cause.

S1·E10 Core

The Crossing

Jan 11, 2006 · 41 min

Molly and Baylock realize the Threshold detainees must be moved immediately to a more secure facility in West Virginia when a prisoner attacks and infects a security guard, then tr

S1·E11 Core

Outbreak (a.k.a. Escalation)

Jan 18, 2006 · 41 min

Lucas is infected with the alien DNA from something he ate. The infectees have harvested crops with the alien DNA. Caffrey must find a way to stop what could be nearly 200 new infe

S1·E12 Mytharc

Vigilante

Jan 25, 2006 · 41 min

When a number of infectees and seemingly innocent people are killed, it becomes apparent that someone is going after people affected by the alien signal, and is locating them via t

S1·E13 Mytharc

Alienville

Feb 1, 2006 · 41 min

Molly Caffrey and Cavennaugh go out to a town call Allenville in search of a Doctor who they think is infected and find more then they were looking for. Meanwhile things at thresh

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