Season
- Season 1 2017-07-21
- Season 2 2018-02-16
- Season 3 2018-06-23
- Season 4 2018-07-13
- Season 5 2018-10-01
- Season 6 2019-01-05
- Season 7 2019-05-05
- Season 8 2019-10-18
- Season 9 2020-04-03
- Season 10 2021-03-01
- Season 11 2022-10-04
- Season 12 2024-01-10
- Season 13 2024-06-05
- Season 14 2024-11-06
- Season 15 2025-06-03
- Season 16 2025-10-29
Season 16 Episode
- Season 15 The Shadow in the Window
- Season 15 The Note
- Season 15 Dangerous Secret
- Season 15 Secrets in Pleasant Prairie
- Season 15 The End of the Affair
- Season 15 The Room Downstairs
- Season 15 The Murdaugh Murders: Inside the Investigation
- Season 15 10 Minutes to Sunset
- Season 15 The Sleepover
- Season 15 The Hands of a Killer
- Season 15 The Day the Music Died
- Season 15 Righteous Obsession
- Season 15 On the Hunt for the Zombie Hunter
- Season 15 Footprints in the Snow
- Season 15 The Girl with the Hibiscus Tattoo
Dateline: Secrets Uncovered - Season 15 Episode 2 The Note
8.10 43 minutes When high school student Megan Nichols vanishes from her Illinois home, her mother finds a note saying that she ran away. A grisly discovery made three years later changes the course of the investigation.
