"The Book of Resistance: Chapter Four: Earth Crisis" is the ninth and midseason finale episode of the third season of Black Lightning, and the thirty-eighth episode overall. It aired on December 9, 2019. This episode ties into the crossover event, Crisis on Infinite Earths, and leads into Black Lightning's appearance in "Crisis on Infinite Earths: Part Three".


The Pierce family fears for Jennifer's life.[src]



Guest starring



  • The title was previously called "Third Stone from the Sun", but changed to tie-in with Arrowverse mega-crossover event Crisis on Infinite Earths.[citation needed]
  • This is the last episode of Black Lightning to centrally take place on Earth-TUD5, as subsequent episodes happen post-Crisis, and are set on Earth-Prime.


  • This episode contains an inconsistency: it ignores the fact that Earth-2 was destroyed weeks prior to the beginning of the Anti-Monitor Crisis in "Starling City", with Earth-1 and Earth-2 versions of Jen (Gen and Jinn, respectively) join her in some kind of void, witnessing events that happened moments before.
    • However, it's possible that each version of Jennifer was brought to Jennifer Pierce's safe place when each of their respective Earths came under attack.
  • Gen mentions that the last thing she remembers before being brought to the safe place was heading back to the Pit with Odell. However, when Jen goes through Gen's memories, we see Gen at the pit speaking with both her sister and mother, which should have been the last thing Gen remembers.
  • Gen's memories took place on Christmas (as mentioned by Earth-1 Odell). However, it was previously established that Crisis occurred on December 10th, which is two weeks before Christmas.


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