The BEST episodes of Threshold

Every episode of Threshold ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Threshold!

Threshold, from producers David Heyman, David Goyer, and Brannon Braga, and written by Bragi Schut, revolves around a female government contingency analyst who leads a team of scientists and military personnel who get in contact with a mysterious alien lifeform.

Last Updated: 11/18/2022Network:CBS
274 votes

#1 - Vigilante

Season 1 - Episode 12 - Aired 1/25/2006

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 their heightened brain waves. How is the killer linked to Bighorn crewman Manning, and does his method of finding his victims mean that Molly, Cavennaugh or Lucas could be next on his list?

Writer: Mike Sussman
Outbreak (a.k.a. Escalation)
243 votes

#2 - Outbreak (a.k.a. Escalation)

Season 1 - Episode 11 - Aired 1/18/2006

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 infectees. Also, one of the aliens approaches her with an interesting revelation.

Trees Made of Glass (1)
357 votes

#3 - Trees Made of Glass (1)

Season 1 - Episode 1 - Aired 9/16/2005

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.

Directors: David S. Goyer
Writer: Bragi Schut
281 votes

#4 - Revelations

Season 1 - Episode 8 - Aired 11/4/2005

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.

Directors: Thomas J. Wright
Watch Now:Amazon
The Crossing
275 votes

#5 - The Crossing

Season 1 - Episode 10 - Aired 1/11/2006

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 tries to break himself and other infected prisoners out of their cells.

Directors: Paul Shapiro
Watch Now:Amazon
219 votes

#6 - Pulse

Season 1 - Episode 6 - Aired 10/14/2005

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.

Directors: Bill L. Norton
Writer: Mike Sussman
Watch Now:Amazon
244 votes

#7 - Alienville

Season 1 - Episode 13 - Aired 2/1/2006

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 threshold get heated with the pregnancy of the infected woman coming to an end.

Directors: Oz Scott
Writer: Anne McGrail
246 votes

#8 - Progeny

Season 1 - Episode 9 - Aired 11/22/2005

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.

Directors: David Jackson
Trees Made of Glass (2)
266 votes

#9 - Trees Made of Glass (2)

Season 1 - Episode 2 - Aired 9/16/2005

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.

Directors: Peter Hyams
198 votes

#10 - Shock

Season 1 - Episode 5 - Aired 10/7/2005

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, the real Homeland Security department is on the case.

Directors: Tim Matheson
Watch Now:Amazon
Blood of the Children
264 votes

#11 - Blood of the Children

Season 1 - Episode 3 - Aired 9/23/2005

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 discovery that the infection has spread beyond the original Big Horn crew.

Directors: Bill Eagles
Writer: Anne McGrail
The Order
220 votes

#12 - The Order

Season 1 - Episode 7 - Aired 10/21/2005

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 town dreaming of trees made of glass.

Directors: Norberto Barba
Writer: Anne McGrail
Watch Now:Amazon
The Burning
248 votes

#13 - The Burning

Season 1 - Episode 4 - Aired 9/30/2005

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 further investigation, it is suspected one of the missing Big Horn crew might be involved.

Watch Now:Amazon

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