| Episode | Title | Premiere |
|---|---|---|
| 24 | Exodus Part 2 | May 25, 2005 |
| 23 | Exodus Part 1 | May 18, 2005 |
| 22 | Born to Run | May 11, 2005 |
| 21 | The Greater Good | May 4, 2005 |
| 20 | Do No Harm | April 6, 2005 |
| 19 | Deus Ex Machina | March 30, 2005 |
| 18 | Numbers | March 2, 2005 |
| 17 | ...In Translation | February 23, 2005 |
| 16 | Outlaws | February 16, 2005 |
| 15 | Homecoming | February 9, 2005 |
| 14 | Special | January 19, 2005 |
| 13 | Hearts and Minds | January 12, 2005 |
| 12 | Whatever the Case May Be | January 5, 2005 |
| 11 | All the Best Cowboys Have Daddy Issues | December 8, 2004 |
| 10 | Raised by Another | December 1, 2004 |
| 09 | Solitary | November 17, 2004 |
| 08 | Confidence Man | November 10, 2004 |
| 07 | The Moth | November 3, 2004 |
| 06 | House of the Rising Sun | October 27, 2004 |
| 05 | White Rabbit | October 20, 2004 |
| 04 | Walkabout | October 13, 2004 |
| 03 | Tabula Rasa | October 6, 2004 |
| 02 | Pilot Part 2 | September 29, 2004 |
| 01 | Pilot Part 1 | September 22, 2004 |
| Episode | Title | Premiere |
|---|---|---|
| 24 | Live Together, Die Alone Part 2 | May 24, 2006 |
| 23 | Live Together, Die Alone Part 1 | May 24, 2006 |
| 22 | Three Minutes | May 17, 2006 |
| 21 | ? | May 10, 2006 |
| 20 | Two for the Road | May 3, 2006 |
| 19 | S.O.S. | April 12, 2006 |
| 18 | Dave | April 5, 2006 |
| 17 | Lockdown | March 29, 2006 |
| 16 | The Whole Truth | March 22, 2006 |
| 15 | Maternity Leave | March 1, 2006 |
| 14 | One of Them | February 15, 2006 |
| 13 | The Long Con | February 8, 2006 |
| 12 | Fire + Water | January 25, 2006 |
| 11 | The Hunting Party | January 18, 2006 |
| 10 | The 23rd Psalm | January 11, 2006 |
| 09 | What Kate Did | November 30, 2005 |
| 08 | Collision | November 23, 2005 |
| 07 | The Other 48 Days | November 16, 2005 |
| 06 | Abandoned | November 9, 2005 |
| 05 | ...And Found | October 19, 2005 |
| 04 | Everybody Hates Hugo | October 12, 2005 |
| 03 | Orientation | October 5, 2005 |
| 02 | Adrift | September 28, 2005 |
| 01 | Man of Science, Man of Faith | September 21, 2005 |
| Episode | Title | Premiere |
|---|---|---|
| 23 | Through the Looking Glass (2) | May 23, 2007 |
| 22 | Through The Looking Glass | May 23, 2007 |
| 21 | Greatest Hits | May 16, 2007 |
| 20 | The Man Behind the Curtain | May 9, 2007 |
| 19 | The Brig | May 2, 2007 |
| 18 | D.O.C. | April 25, 2007 |
| 17 | Catch-22 | April 18, 2007 |
| 16 | One of Us | April 11, 2007 |
| 15 | Left Behind | April 4, 2007 |
| 14 | Expose | March 28, 2007 |
| 13 | The Man From Tallahassee | March 21, 2007 |
| 12 | Par Avion | March 14, 2007 |
| 11 | Enter 77 | March 7, 2007 |
| 10 | Tricia Tanaka is Dead | February 28, 2007 |
| 09 | Stranger In A Strange Land | February 21, 2007 |
| 08 | Flashes Before Your Eyes | February 14, 2007 |
| 07 | Not In Portland | February 7, 2007 |
| 06 | I Do | November 8, 2006 |
| 05 | The Cost of Living | November 1, 2006 |
| 04 | Every Man for Himself | October 25, 2006 |
| 03 | Further Instructions | October 18, 2006 |
| 02 | The Glass Ballerina | October 11, 2006 |
| 01 | A Tale of Two Cities | October 4, 2006 |
| Episode | Title | Premiere |
|---|---|---|
| 13 | There's No Place Like Home Part 2 | May 29, 2008 |
| 12 | There's No Place Like Home Part 1 | May 15, 2008 |
| 11 | Cabin Fever | May 8, 2008 |
| 10 | Something Nice Back Home | May 1, 2008 |
| 09 | The Shape of Things to Come | April 24, 2008 |
| 08 | Meet Kevin Johnson | March 20, 2008 |
| 07 | Ji Yeon | March 13, 2008 |
| 06 | The Other Woman | March 6, 2008 |
| 05 | The Constant | February 28, 2008 |
| 04 | Eggtown | February 21, 2008 |
| 03 | The Economist | February 14, 2008 |
| 02 | Confirmed Dead | February 7, 2008 |
| 01 | The Beginning of the End | January 31, 2008 |
| Episode | Title | Premiere |
|---|---|---|
| 17 | The Incident, pt. 2 | May 13, 2009 |
| 16 | The Incident, pt. 1 | May 13, 2009 |
| 15 | Follow the Leader | May 6, 2009 |
| 14 | The Variable | April 29, 2009 |
| 13 | Some Like It Hoth | April 15, 2009 |
| 12 | Dead is Dead | April 8, 2009 |
| 11 | Whatever Happened, Happened | April 1, 2009 |
| 10 | He's Our You | March 25, 2009 |
| 09 | Namaste | March 18, 2009 |
| 08 | LeFleur | March 4, 2009 |
| 07 | The Life and Death of Jeremy Bentham | February 25, 2009 |
| 06 | 316 | February 18, 2009 |
| 05 | This Place is Death | February 11, 2009 |
| 04 | The Little Prince | February 4, 2009 |
| 03 | Jughead | January 28, 2009 |
| 02 | The Lie | January 21, 2009 |
| 01 | Because You Left | January 21, 2009 |
| Episode | Title | Premiere |
|---|---|---|
| 17-18 | The End | May 23, 2010 |
| 17 | The End | May 23, 2010 |
| 16 | What They Died For | May 18, 2010 |
| 15 | Across the Sea | May 11, 2010 |
| 14 | The Candidate | May 4, 2010 |
| 13 | The Last Recruit | April 20, 2010 |
| 12 | Everybody Loves Hugo | April 13, 2010 |
| 11 | Happily Ever After | April 6, 2010 |
| 10 | The Package | March 30, 2010 |
| 09 | Ab Aeterno | March 23, 2010 |
| 08 | Recon | March 16, 2010 |
| 07 | Dr. Linus | March 9, 2010 |
| 06 | Sundown | March 2, 2010 |
| 05 | Lighthouse | February 23, 2010 |
| 04 | The Substitute | February 16, 2010 |
| 03 | What Kate Does | February 9, 2010 |
| 02 | LA X (2) | February 2, 2010 |
| 01/02 | LA X | February 2, 2010 |
| 01 | LA X (1) | February 2, 2010 |
