For the titular character, see Kara Danvers.
"Girl of Steel" is the first episode of the third season of Supergirl, and the forty-third episode overall. It aired on October 9, 2017.


Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex confesses a secret to Maggie about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and Lena makes a bold move.[1]


  • This episode was the first to feature Erica Durance as Alura Zor-El. She took over the role from Laura Benanti.
  • Lena remarked to Morgan that he had "all of the charisma of a Michael Douglas movie from the '80s".
  • The episode's title is a classic title given to Supergirl. It is also a slight alteration of the title of the DCEU 2013 Superman film Man of Steel.
  • The opening scene bears a strong resemblance to a scene in Superman Returns in which Superman, struggling with romantic issues, hovers high above in the dark, using his super hearing to listen to various noises like sirens before snapping his eyes open and flying back to Earth, just in time to stand in front of two officers being shot at by a rotary machine gun.