Star Trek: Voyager: Season 2, Episode 15

Threshold (29 Jan. 1996)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 5.4/10 from 429 users  
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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 »



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Title: Threshold (29 Jan 1996)

Threshold (29 Jan 1996) on IMDb 5.4/10

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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.)

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24th century



Release Date:

29 January 1996 (USA)  »

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Did You Know?


This is the first time The Doctor is shown walking through a forcefield. See more »


In "Threshold", Tom and Harry are trying to break the Warp 10 barrier. In the process they say its a theoretical impossibility and that no one has gone that fast. At least once in Star Trek (1966) and Star Trek: The Next Generation (1987) the warp 10 barrier is apparently broken, but this is either due to a reclassification of the warp speed system or means something else. At no point in any other episode did any starship travel at 'infinite velocity': The ships just traveled faster than they would usually be expected to under normal circumstances. See more »


The Doctor: [to Paris] You're not going anywhere. At least not for a few hours. I have some tests I'd like to run on Your Majesty before I release you back into the realm of ordinary humans.
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Star Trek: Voyager - Main Title
Written by Jerry Goldsmith
Performed by Jay Chattaway
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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.

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