Supergirl Episode 219 Alex Supergirl Episode 219, titled Alex , aired this week and was another episode which focused more on the characters and less on the main storyline of Daxams impending invasion. The main arc isnt completely ignored, a crucial piece is definitely put into place here. But this is about how important Alex is to this universe. Alex is kidnapped and we see how that effects Kara. We see how that effects Maggie. And we see how that effects Jonn. Alex is an important figure in all of their lives - sister, girlfriend, and daughter respectively. And when she is put in peril, we see just how much Alex is the rock these characters rely on. One of the underlying themes of this episode is seeing how different Maggie and Karas methods are in delivering justice. Maggie is a by the book detective, following procedure, and using her interrogation and investigative skills in a deliberate manner. She is aware of the long game and doesnt mind playing it. Kara, on the other hand, is ...