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| Aflevering | Eerste uitzending |
|---|---|
| S20E01 - The Hunt for Saddam's Secret Weapons | 05/01/1993 |
| S20E02 - Can Bombing Win a War? | 19/01/1993 |
| S20E03 - The Deadly Deception | 26/01/1993 |
| S20E04 - Nazis and the Russian Bomb | 02/02/1993 |
| S20E05 - In the Path of a Killer Volcano | 09/02/1993 |
| S20E06 - Can Science Build a Champion Athlete? | 16/02/1993 |
| S20E07 - Diving for Pirate Gold | 23/02/1993 |
| S20E08 - Murder, Rape and DNA | 02/03/1993 |
| S20E09 - The Lost Tribe | 30/03/1993 |
| S20E10 - The NOVA Quiz | 05/10/1993 |
| S20E11 - Wanted: Butch and Sundance | 12/10/1993 |
| S20E12 - Secrets of the Psychics | 19/10/1993 |
| S20E13 - Dying to Breathe | 26/10/1993 |
| S20E14 - Shadow of the Condor | 02/11/1993 |
| S20E15 - The Real Jurassic Park | 09/11/1993 |
| S20E16 - Roller Coaster! | 16/11/1993 |
| S20E17 - Mysterious Crash of Flight 201 | 30/11/1993 |
| S20E18 - Great Moments from NOVA | 07/12/1993 |
| S20E19 - The Best Mind Since Einstein | 21/12/1993 |
| S20E20 - Stranger in the Mirror | 28/12/1993 |