"I always knew that I was a girl. My parents were amazing. They affirmed my authentic self, and helped me transition young, and I've always been able to be open about who I was in Parthas. I'm not saying it was easy; there were definitely people who didn't understand. But the town's ethos of inclusion is strong, and I think if I grew up anywhere else, it would have been a lot tougher."
Nia Nal to Kara Danvers
"Blood Memory" is the eleventh episode of the fourth season of Supergirl, and the seventy-sixth episode overall. It aired on January 27, 2019.


Kara joins Nia on a trip to Nia’s hometown to visit her family during the town’s annual Harvest Festival. While home, Nia’s mother encourages her daughter to embrace her destiny. Meanwhile, Alex deals with a street drug that is turning people violent and giving them temporary superpowers.[1]


  • At the beginning of the episode, Kara, Alex, Lena, James, Nia, and Brainy are seen playing Exploding Kittens, a popular card game published by The Oatmeal.
  • Brainy identifies the source of radiation in the frat boys' drugs as gamma rays, which, in Marvel comics, is the same source that turned Bruce Banner into the Incredible Hulk.
  • Lena recognizes Parthas, Nia's hometown, as a word of Irish origin meaning "Paradise". Her actress, Katie McGrath, is herself Irish, and her native accent has briefly slipped out in several previous episodes.
  • Throughout the episode, there are many references to the 1991 film Terminator 2: Judgment Day, and Alex, Kara, and J'onn even begin watching it at the end of the episode.
  • When they first see Spencer's rage transformation, Kevin Huggins says he looks "like Hagrid on steroids", referring to a character from Harry Potter.
  • In one scene, Brainy compares the frat boys' rage transformations to that of Dr. Jekyll into Mr. Hyde, referring to the 1886 novel Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson.


  1. "Supergirl - Episode 4.11 - Blood Memory - Press Release " - SpoilerTV
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