234 votes


CBS 2005

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.

Warning: the following content contains spoilers!

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The 10 Best Episodes of Threshold

Threshold - S1E12

#1 - Vigilante (Season 1 - Episode 12)

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?

The episode was rated 7.96 from 50 votes.

Threshold - S1E11

#2 - Outbreak (a.k.a. Escalation) (Season 1 - Episode 11)

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.

The episode was rated 7.68 from 50 votes.

Threshold - S1E8

#3 - Revelations (Season 1 - Episode 8)

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.

The episode was rated 7.64 from 59 votes.

Threshold - S1E4

#4 - The Burning (Season 1 - Episode 4)

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.

The episode was rated 7.64 from 61 votes.

Threshold - S1E9

#5 - Progeny (Season 1 - Episode 9)

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.

The episode was rated 7.61 from 51 votes.

Threshold - S1E10

#6 - The Crossing (Season 1 - Episode 10)

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.

The episode was rated 7.60 from 53 votes.

Threshold - S1E13

#7 - Alienville (Season 1 - Episode 13)

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.

The episode was rated 7.58 from 48 votes.

Threshold - S1E2

#8 - Trees Made of Glass (2) (Season 1 - Episode 2)

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.

The episode was rated 7.54 from 70 votes.

Threshold - S1E3

#9 - Blood of the Children (Season 1 - Episode 3)

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.

The episode was rated 7.54 from 74 votes.

Threshold - S1E6

#10 - Pulse (Season 1 - Episode 6)

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.

The episode was rated 7.50 from 56 votes.

Threshold - S1E5
#11 - Shock
Season 1 - Episode 5

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.

The episode was rated from 62 votes.
Threshold - S1E7
#12 - The Order
Season 1 - Episode 7

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.

The episode was rated from 55 votes.
Threshold - S1E1
#13 - Trees Made of Glass (1)
Season 1 - Episode 1

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.

The episode was rated from 105 votes.

Last updated: oct 20, 2022



At the beginning, it reminded me of Scorpion - but with Aliens. Although the writing was fairly basic, it was actually a good story. Each episode built a little on the others, adding a new aspect to the story that made it feel like it was growing throughout the series. The central premise of the Threshold protocols was quickly forgotten, and largely irrelevant, but that wasn't really a bad thing. The acting of the main characters varied considerably (and as someone who is yet to watch Game of Thrones, I know realise why one of those actors has become so well respected) Although it was made in 2005, it has aged quite well compared to other alien invasion stories - the only time I wondered was when there was a shot of a Motorola cell phone. Overall, this felt like it was a lot better than other similar series, and was actually a bit of hidden gem. I liked it.


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