| Title | Season Episode | Airdate | Stardate | Year | Rating | |
| Suddenly Human | 4 x 04 | 77 | 15 Oct 1990 | 44143.7 | 2367 |  |
| Future Imperfect | 4 x 08 | 81 | 12 Nov 1990 | 44286.5 | 2367 | |
| Data's Day | 4 x 11 | 84 | 7 Jan 1991 | 44390.1 | 2367 | |
| Clues | 4 x 14 | 87 | 11 Feb 1991 | 44502.7 | 2367 | |
| Galaxy's Child | 4 x 16 | 89 | 11 Mar 1991 | 44614.6 | 2367 | |
| Identity Crisis | 4 x 18 | 91 | 25 Mar 1991 | 44664.5 | 2367 | |
| The N'th Degree | 4 x 19 | 92 | 1 Apr 1991 | 44704.2 | 2367 | |
| The Drumhead | 4 x 21 | 94 | 29 Apr 1991 | 44769.2 | 2367 | |
| Half a Life | 4 x 22 | 95 | 6 May 1991 | 44805.3 | 2367 | |
| The Host | 4 x 23 | 96 | 13 May 1991 | 44821.3 | 2367 | |
| The Mind's Eye | 4 x 24 | 97 | 27 May 1991 | 44885.5 | 2367 | |
| In Theory | 4 x 25 | 98 | 3 Jun 1991 | 44932.3 | 2367 | |
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