Lost: Season 4, Episode 5

The Constant (28 Feb. 2008)

TV Episode  -   -  Adventure | Drama | Fantasy
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Ratings: 9.7/10 from 5,018 users  
Reviews: 19 user | 3 critic

During the helicopter ride to the ship, Desmond's consciousness begins jumping back and forth between present day 2004 and 1996. He is forced to find Daniel Faraday in 1996 in order to get answers and stop the jumps.



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Episode cast overview, first billed only:
Claire Littleton (credit only)
Ben Linus (credit only)
Hugo 'Hurley' Reyes (credit only)
James 'Sawyer' Ford (credit only)
Jin Kwon (credit only)
Sun Kwon (credit only)
Miles Straume (credit only)
Kate Austen (credit only)
John Locke (credit only)


During the helicopter ride to the ship, Desmond's consciousness begins jumping back and forth between present day 2004 and 1996. He is forced to find Daniel Faraday in 1996 in order to get answers and stop the jumps.

Plot Summary | Plot Synopsis


TV-14 | See all certifications »




Release Date:

28 February 2008 (USA)  »

Filming Locations:

Company Credits

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,  »
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Sound Mix:


Aspect Ratio:

1.78 : 1
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Did You Know?


Desmond meets Charles Widmore in an auction, where he's buying the journal of The Black Rock's first mate. The Black Rock is the ship that lies in the middle of the jungle in the island. See more »


The auctioneer says that the ship Black Rock was lost at sea on its maiden voyage in 1845. As we have previously seen, the Black Rock carried dynamite, which was invented in 1863. See more »


Desmond Hume: Set your device to... 2.342 and make sure it oscillates at 11.
Daniel Faraday: OK, now, you... You're gonna tell me who told you those numbers.
Desmond Hume: You did.
Daniel Faraday: Wait a second. This is ridiculous.
Desmond Hume: I know about Eloise.
See more »

Crazy Credits

The Producers gratefully acknowledge the cooperation of the people of Hawaii and their Aloha spirit. See more »


Main Title
Written by J.J. Abrams
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User Reviews

What an awesome episode, with a great nod to Vonnegut!
6 March 2008 | by (United States) – See all my reviews

This season, and especially this episode, of Lost has blown me away in the same fashion as Season 1. It's fantastic!

I'm a huge fan of time travel, and have been since I was old enough to remember. I really appreciated this episode's nod to Kurt Vonnegut's idea of becoming "unstuck" from time was very well done. It captured everything I imagined about Billy Pilgrim in 'Slaughterhouse 5.' While the leaps were shorter with Desmond, it is still a powerful thing to see. My question is, now that Desmond has an anchor, will he stop jumping? And what about his memory? Thank you, Lost, for bringing this concept to life for me!

The ship isn't nearly as impressive as I thought it would be, but that is similar to how common the hatch was when they broke into it. I'm still curious about why the time disruption happened, but the plot twists of this episode were enough to both satisfy my curiosity and intrigue it on other levels. Hopefully tonight's episode will keep up the excitement. Desmond episodes are hard acts to follow, but, with the shortened season, I'm counting on more episodes like this and fewer slow ones.

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