Star Trek: Voyager: Season 2, Episode 15

Threshold (29 Jan. 1996)

TV Episode  -   -  Action | Adventure | Sci-Fi
Your rating:
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Ratings: 5.4/10 from 453 users  
Reviews: 5 user | 3 critic

After finding a type of dilithium that can survive at a higher temperatures, Tom Paris comes up with the ingenious idea of attempting to cross the transwarp threshold in an attempt to find ... See full summary »



, (created by), 4 more credits »
0Check in

Watch Now

with Prime Instant Video + 1 more

User Lists

Related lists from IMDb users

a list of 2480 titles
created 26 Nov 2011
a list of 26 titles
created 12 Aug 2012
a list of 48 titles
created 9 months ago
a list of 1266 titles
created 3 months ago
a list of 170 titles
created 1 week ago

Related Items

Search for "Threshold" on

Connect with IMDb

Share this Rating

Title: Threshold (29 Jan 1996)

Threshold (29 Jan 1996) on IMDb 5.4/10

Want to share IMDb's rating on your own site? Use the HTML below.

Take The Quiz!

Test your knowledge of Star Trek: Voyager.
« Previous Episode | 30 of 170 Episodes | Next Episode »





Episode cast overview:
Lieutenant B'Elanna Torres (as Roxann Biggs-Dawson)


After finding a type of dilithium that can survive at a higher temperatures, Tom Paris comes up with the ingenious idea of attempting to cross the transwarp threshold in an attempt to find a way to get home faster. After a bumpy start and the help of Torres and Kim, they succeed in a holodeck simulation. When it is presented to Captain Janeway, she is impressed and gives them the go ahead to try it, but traveling faster than warp 10 has never before been attempted. The first run goes very well. Tom Paris manages to cross the warp threshold which means that the shuttle craft in which he is traveling exists simultaneously everywhere. But Tom then disappears and Harry is unable to find him anywhere within five parsecs. Tom somehow manages to return to Voyager through subspace, but there are unforeseen side-effects of his transwarp travel and Tom begins to mutate. The doctor tries to treat him with a type of radiation that will prohibit cell mutation, however this fails and Tom dies. To ... Written by Leila Reid (edited by Jeff L.)

Plot Summary | Add Synopsis

Plot Keywords:

24th century




Release Date:

29 January 1996 (USA)  »

Company Credits

Production Co:

Show detailed on  »

Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
See  »

Did You Know?


This episode was received so poorly by the Star Trek fanbase that it was later ruled non-canon by the showrunners. See more »


In the scene where Tom makes his first Warp 10 test flight in the shuttle, Tuvok announces his speed as Warp 9.9. He then states that the shuttle is exceeding Voyager's maximum speed. However, in the first episode of the series, Lt. Stadi establishes that Voyager has a maximum sustainable speed of Warp 9.975. Therefore, at Warp 9.9, Voyager could easily keep up with Tom and the shuttle. See more »


[the Doctor is examining an unconscious Paris]
The Doctor: From what I can tell, he's just... asleep.
Captain Kathryn Janeway: Can you wake him?
The Doctor: I don't see why not.
The Doctor: [bends down to Paris] Wake up, Lieutenant!
See more »


Referenced in Zero Charisma (2013) See more »


Star Trek: Voyager - Main Title
Written by Jerry Goldsmith
Performed by Jay Chattaway
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Not as bad as I'd heard
16 July 2010 | by (United Kingdom) – See all my reviews

Before watching this episode I'd heard that it was so bad that even the writers had disowned it so I was expecting a real turkey. It wasn't that bad however; it is by no means a great episode but I didn't think it was terrible either.

The story follows Tom Paris' attempt to break the transwarp barrier, something that was always considered impossible. He manages to do it however but when he gets back something is wrong with him. At first he seems okay but suddenly collapses and starts to mutate, at one point he appears to have died but much to the Doctor's surprise he recovers. We later learn that these aren't random mutations but highly accelerated evolution. During an attempt to delete all the mutate genes he escapes and kidnaps Captain Janeway and flees in the transwarp shuttle. By the time Voyager finds them they have both evolved into what look like giant salamanders and have even had off spring... luckily for them after they are cured the memories of what happened fade.

The story itself was good enough although it did have its faults; it is said that when they go at warp ten they are at every point in the universe simultaneously, if this is so it seems unlikely that they would end up a mere three days away from Voyager.

6 of 21 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
actually pretty good for star trek martin-sem84
Chakotay and his Mumbo-Jumbo eddysl12
Janeway's Holodeck program Josh_E23
Who would you rather have as CAPTAIN of Voyager? Low_Rent
Good Concept with a poor execution ReeseJohn
Kind of ironic dreamcurse
Discuss Threshold (1996) on the IMDb message boards »

Contribute to This Page

Create a character page for: