S03E22: Through the Looking Glass (1)
The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the underwater "Looking Glass Hatch".
Previous Episode 
Season 1
Pilot (1)
S1E1 / 22 Sep 2004
Pilot (2)
S1E2 / 29 Sep 2004
Tabula Rasa
S1E3 / 06 Oct 2004
Walkabout
S1E4 / 13 Oct 2004
White Rabbit
S1E5 / 20 Oct 2004
House of the Rising Sun
S1E6 / 27 Oct 2004
The Moth
S1E7 / 03 Nov 2004
Confidence Man
S1E8 / 10 Nov 2004
Solitary
S1E9 / 17 Nov 2004
Raised by Another
S1E10 / 01 Dec 2004
All the Best Cowboys Have Daddy Issues
S1E11 / 08 Dec 2004
Whatever the Case May Be
S1E12 / 05 Jan 2005
Hearts and Minds
S1E13 / 12 Jan 2005
Special
S1E14 / 19 Jan 2005
Homecoming
S1E15 / 09 Feb 2005
Outlaws
S1E16 / 16 Feb 2005
...In Translation
S1E17 / 23 Feb 2005
Numbers
S1E18 / 02 Mar 2005
Deus Ex Machina
S1E19 / 30 Mar 2005
Do No Harm
S1E20 / 06 Apr 2005
The Greater Good
S1E21 / 04 May 2005
Born to Run
S1E22 / 11 May 2005
Exodus (1)
S1E23 / 18 May 2005
Exodus (2)
S1E24 / 25 May 2005
Season 2
Man of Science, Man of Faith
S2E1 / 21 Sep 2005
Adrift
S2E2 / 28 Sep 2005
Orientation
S2E3 / 05 Oct 2005
Everybody Hates Hugo
S2E4 / 12 Oct 2005
...And Found
S2E5 / 19 Oct 2005
Abandoned
S2E6 / 09 Nov 2005
The Other 48 Days
S2E7 / 16 Nov 2005
Collision
S2E8 / 23 Nov 2005
What Kate Did
S2E9 / 30 Nov 2005
The 23rd Psalm
S2E10 / 11 Jan 2006
The Hunting Party
S2E11 / 18 Jan 2006
Fire + Water
S2E12 / 25 Jan 2006
The Long Con
S2E13 / 08 Feb 2006
One of Them
S2E14 / 15 Feb 2006
Maternity Leave
S2E15 / 01 Mar 2006
The Whole Truth
S2E16 / 22 Mar 2006
Lockdown
S2E17 / 29 Mar 2006
Dave
S2E18 / 05 Apr 2006
S.O.S.
S2E19 / 12 Apr 2006
Two for the Road
S2E20 / 03 May 2006
?
S2E21 / 10 May 2006
Three Minutes
S2E22 / 17 May 2006
Live Together, Die Alone (1)
S2E23 / 24 May 2006
Live Together, Die Alone (2)
S2E24 / 24 May 2006
Season 3
A Tale of Two Cities
S3E1 / 04 Oct 2006
The Glass Ballerina
S3E2 / 11 Oct 2006
Further Instructions
S3E3 / 18 Oct 2006
Every Man for Himself
S3E4 / 25 Oct 2006
The Cost of Living
S3E5 / 01 Nov 2006
I Do
S3E6 / 08 Nov 2006
Not in Portland
S3E7 / 07 Feb 2007
Flashes Before Your Eyes
S3E8 / 14 Feb 2007
Stranger in a Strange Land
S3E9 / 21 Feb 2007
Tricia Tanaka Is Dead
S3E10 / 28 Feb 2007
Enter 77
S3E11 / 07 Mar 2007
Par Avion
S3E12 / 14 Mar 2007
The Man from Tallahassee
S3E13 / 21 Mar 2007
Exposé
S3E14 / 28 Mar 2007
Left Behind
S3E15 / 04 Apr 2007
One of Us
S3E16 / 11 Apr 2007
Catch-22
S3E17 / 18 Apr 2007
D.O.C.
S3E18 / 25 Apr 2007
The Brig
S3E19 / 02 May 2007
The Man Behind the Curtain
S3E20 / 09 May 2007
Greatest Hits
S3E21 / 16 May 2007
Through the Looking Glass (1)
S3E22 / 23 May 2007
Through the Looking Glass (2)
S3E23 / 23 May 2007
Season 4
The Beginning of the End
S4E1 / 31 Jan 2008
Confirmed Dead
S4E2 / 07 Feb 2008
The Economist
S4E3 / 14 Feb 2008
Eggtown
S4E4 / 21 Feb 2008
The Constant
S4E5 / 28 Feb 2008
The Other Woman
S4E6 / 06 Mar 2008
Ji Yeon
S4E7 / 13 Mar 2008
Meet Kevin Johnson
S4E8 / 20 Mar 2008
The Shape of Things to Come
S4E9 / 24 Apr 2008
Something Nice Back Home
S4E10 / 01 May 2008
Cabin Fever
S4E11 / 08 May 2008
There's No Place Like Home (1)
S4E12 / 15 May 2008
There's No Place Like Home (2)
S4E13 / 29 May 2008
Season 5
Because You Left
S5E1 / 21 Jan 2009
The Lie
S5E2 / 21 Jan 2009
Jughead
S5E3 / 28 Jan 2009
The Little Prince
S5E4 / 04 Feb 2009
This Place Is Death
S5E5 / 11 Feb 2009
316
S5E6 / 18 Feb 2009
The Life and Death of Jeremy Bentham
S5E7 / 25 Feb 2009
LaFleur
S5E8 / 04 Mar 2009
Namaste
S5E9 / 18 Mar 2009
He's Our You
S5E10 / 25 Mar 2009
Whatever Happened, Happened
S5E11 / 01 Apr 2009
Dead Is Dead
S5E12 / 08 Apr 2009
Some Like It Hoth
S5E13 / 15 Apr 2009
The Variable
S5E14 / 29 Apr 2009
Follow the Leader
S5E15 / 06 May 2009
The Incident (1)
S5E16 / 13 May 2009
The Incident (2)
S5E17 / 13 May 2009
Season 6
LA X (1)
S6E1 / 02 Feb 2010
LA X (2)
S6E2 / 02 Feb 2010
What Kate Does
S6E3 / 09 Feb 2010
The Substitute
S6E4 / 16 Feb 2010
Lighthouse
S6E5 / 23 Feb 2010
Sundown
S6E6 / 02 Mar 2010
Dr. Linus
S6E7 / 09 Mar 2010
Recon
S6E8 / 16 Mar 2010
Ab Aeterno
S6E9 / 23 Mar 2010
The Package
S6E10 / 30 Mar 2010
Happily Ever After
S6E11 / 06 Apr 2010
Everybody Loves Hugo
S6E12 / 13 Apr 2010
The Last Recruit
S6E13 / 20 Apr 2010
The Candidate
S6E14 / 04 May 2010
Across the Sea
S6E15 / 11 May 2010
What They Died For
S6E16 / 18 May 2010
The End
S6E17 / 23 May 2010
Matthew Fox
Jack Shephard
Evangeline Lilly
Kate Austen
Terry O'Quinn
John Locke
Josh Holloway
James Sawyer
Michael Emerson
Benjamin Linus
Jorge Garcia
Hurley Reyes
Naveen Andrews
Sayid Jarrah
