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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - The Best of Both Worlds (2) | 24/09/1990 |
| S04E02 - Family | 01/10/1990 |
| S04E03 - Brothers | 08/10/1990 |
| S04E04 - Suddenly Human | 15/10/1990 |
| S04E05 - Remember Me | 22/10/1990 |
| S04E06 - Legacy | 29/10/1990 |
| S04E07 - Reunion | 05/11/1990 |
| S04E08 - Future Imperfect | 12/11/1990 |
| S04E09 - Final Mission | 19/11/1990 |
| S04E10 - The Loss | 01/12/1990 |
| S04E11 - Data's Day | 07/01/1991 |
| S04E12 - The Wounded | 28/01/1991 |
| S04E13 - Devil's Due | 04/02/1991 |
| S04E14 - Clues | 11/02/1991 |
| S04E15 - First Contact | 18/02/1991 |
| S04E16 - Galaxy's Child | 11/03/1991 |
| S04E17 - Night Terrors | 18/03/1991 |
| S04E18 - Identity Crisis | 25/03/1991 |
| S04E19 - The Nth Degree | 01/04/1991 |
| S04E20 - Qpid | 22/04/1991 |
| S04E21 - The Drumhead | 29/04/1991 |
| S04E22 - Half a Life | 06/05/1991 |
| S04E23 - The Host | 13/05/1991 |
| S04E24 - The Mind's Eye | 27/05/1991 |
| S04E25 - In Theory | 03/06/1991 |
| S04E26 - Redemption (1) | 17/06/1991 |