Black Lightning The Book of Secrets: Chapter Four: Original Sin (2018– ) Online
- Original Title :
- The Book of Secrets: Chapter Four: Original Sin
- Genre :
- TV Episode / Action / Drama / Sci-Fi
- Year :
- 2018–
- Directror :
- Oz Scott
- Cast :
- Cress Williams,China Anne McClain,Nafessa Williams
- Writer :
- Tony Isabella,Trevor Von Eeden
- Type :
- TV Episode
- Time :
- 43min
- Rating :
- 6.4/10
Jeff receives a visit from a former student, Anissa goes looking for Grace, and Jennifer gets a new suit.
| Episode cast overview, first billed only: | |||
 | Cress Williams | - | Jefferson Pierce / Black Lightning |
 | China Anne McClain | - | Jennifer Pierce |
 | Nafessa Williams | - | Anissa Pierce |
 | Christine Adams | - | Lynn Pierce |
 | Marvin 'Krondon' Jones III | - | Tobias Whale (credit only) |
 | Damon Gupton | - | Bill Henderson |
 | Jordan Calloway | - | Khalil Payne (credit only) |
 | James Remar | - | Peter Gambi |
 | Bill Duke | - | Agent Percy Odell |
 | William Catlett | - | Lala |
 | Dabier | - | Will (as Dabier Snell) |
 | Chantal Thuy | - | Grace Choi |
 | Michael Wright | ||
 | Tracey Bonner | - | Lawanda White |
 | Madison Bailey | - | Wendy |
When Gambi shows Jefferson's wife and kids Black Lightnings original costume, it looks nearly identical to the one worn by Black Lightning in DC comics.