| Title | Season Episode | Airdate | Stardate | Year | Rating | |
| Scorpion, Part 2 | 4 x 01 | 69 | 3 Sep 1997 | 51003.7 | 2374 |  |
| The Gift | 4 x 02 | 70 | 10 Sep 1997 | 51008 | 2374 |  |
| Nemesis | 4 x 04 | 72 | 24 Sep 1997 | 51082.4 | 2374 |  |
| Revulsion | 4 x 05 | 73 | 1 Oct 1997 | 51186.2 | 2374 |  |
| Scientific Method | 4 x 07 | 75 | 29 Oct 1997 | 51244.3 | 2374 |  |
| Year of Hell, Part 1 | 4 x 08 | 76 | 5 Nov 1997 | 51268.4 | 2374 | |
| Random Thoughts | 4 x 10 | 78 | 19 Nov 1997 | 51367.2 | 2374 | |
| Concerning Flight | 4 x 11 | 79 | 26 Nov 1997 | 51386.4 | 2374 | |
| Year of Hell, Part 2 | 4 x 09 | 77 | 12 Nov 1997 | 51425.4 | 2374 | |
| Mortal Coil | 4 x 12 | 80 | 17 Dec 1997 | 51449.2 | 2374 | |
| Message in a Bottle | 4 x 14 | 82 | 21 Jan 1998 | 51462 | 2374 | |
| Waking Moments | 4 x 13 | 81 | 14 Jan 1998 | 51471.3 | 2374 | |
| Hunters | 4 x 15 | 83 | 11 Feb 1998 | 51501.4 | 2374 | |
| Prey | 4 x 16 | 84 | 18 Feb 1998 | 51652.3 | 2374 | |
| Retrospect | 4 x 17 | 85 | 25 Feb 1998 | 51658.2 | 2374 | |
| The Killing Game, Part 1 | 4 x 18 | 86 | 4 Mar 1998 | 51715.2 | 2374 | |
| The Killing Game, Part 2 | 4 x 19 | 87 | 4 Mar 1998 | 51715.2 | 2374 | |
| Vis-a-Vis | 4 x 20 | 88 | 8 Apr 1998 | 51762.4 | 2374 | |
| The Omega Directive | 4 x 21 | 89 | 15 Apr 1998 | 51781.2 | 2374 | |
| Unforgettable | 4 x 22 | 90 | 22 Apr 1998 | 51813.4 | 2374 | |
| One | 4 x 25 | 93 | 13 May 1998 | 51929.3 | 2374 | |
| Hope and Fear | 4 x 26 | 94 | 20 May 1998 | 51978.2 | 2374 | |
| Day of Honor | 4 x 03 | 71 | 17 Sep 1997 | Unknown | 2374 | |
| The Raven | 4 x 06 | 74 | 8 Oct 1997 | Unknown | 2374 | |
| Living Witness | 4 x 23 | 91 | 29 Apr 1998 | Unknown | 2374 | |
| Demon | 4 x 24 | 92 | 6 May 1998 | Unknown | 2374 | |
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