| Week Of | Ep # | Title | |
|---|---|---|---|
| 110 | 9/22/03 | 601 | Redemption Part 1 |
| 111 | 9/29/03 | 602 | Redemption Part 2 |
| 112 | 10/06/03 | 603 | Descent |
| 113 | 10/13/03 | 604 | Frozen |
| 114 | 10/20/03 | 605 | Nightwalkers |
| 115 | 10/27/03 | 606 | Abyss |
| 116 | 11/03/03 | 607 | Shadow Play |
| 117 | 11/10/03 | 608 | The Other Guys |
| 118 | 11/17/03 | 609 | Allegiance |
| 119 | 11/24/03 | 610 | The Cure |
| 120 | 12/01/03 | 611 | Prometheus |
| 12/08/03 | 603 | Descent | |
| 12/15/03 | 604 | Frozen | |
| 12/22/03 | 606 | Abyss | |
| 12/29/03 | 607 | Shadow Play | |
| 1/05/04 | 608 | The Other Guys | |
| 1/12/04 | 609 | Allegiance | |
| 1/19/04 | 611 | Prometheus | |
| 121 | 1/26/04 | 612 | Unnatural Selection |
| 2/02/04 | 610 | The Cure | |
| 122 | 2/09/04 | 613 | Sight Unseen |
| 123 | 2/16/04 | 614 | Smoke and Mirrors |
| 124 | 2/23/04 | 615 | Paradise Lost |
| 125 | 3/01/04 | 616 | Metamorphosis |
| 126 | 3/08/04 | 617 | Disclosure |
| 127 | 3/15/04 | 618 | Foresaken |
| 3/22/04 | 601 | Redemption Part 1 | |
| 3/29/04 | 602 | Redemption Part 2 | |
| 4/05/04 | 603 | Descent | |
| 4/12/04 | 604 | Frozen | |
| 4/19/04 | 606 | Abyss | |
| 128 | 4/26/04 | 619 | The Changling |
| 129 | 5/03/04 | 620 | Memento |
| 130 | 5/10/04 | 622 | Prophecy |
| 131 | 5/17/04 | 621 | Full Circle |
| 5/24/04 | 607 | Shadow Play | |
| 5/31/04 | 608 | The Other Guys | |
| 6/07/04 | 609 | Allegiance | |
| 6/14/04 | 610 | The Cure | |
| 6/21/04 | 611 | Prometheus | |
| 6/28/04 | 612 | Unnatural Selection | |
| 7/05/04 | 613 | Sight Unseen | |
| 7/12/04 | 614 | Smoke and Mirrors | |
| 7/19/04 | 601 | Redemption Part 1 | |
| 7/26/04 | 602 | Redemption Part 2 | |
| 8/02/04 | 616 | Metamorphosis | |
| 8/09/04 | 617 | Disclosure | |
| 8/16/04 | 618 | Foresaken | |
| 8/23/04 | 619 | The Changling | |
| 8/30/04 | 620 | Memento | |
| 9/06/04 | 622 | Prophecy | |
| 9/13/04 | 621 | Full Circle |
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