The CW has announced that Superman's enemy Lex Luthor will be coming to Supergirl later in Season 4.
Official CW preview images for the Supergirl episode "Fallout" airing Oct. 21 on The CW
There was a hidden Star Wars connection in the Supergirl season premiere.
Preview clip for the Supergirl Season 4 premiere "American Alien"
Official CW description with spoilers for the Agent Liberty origin episode "Man of Steel"
Official CW description with spoilers for the Supergirl episode "Fallout"
Official preview images and spoiler description promoting the Supergirl season premiere "American Alien"
Fan made Supergirl Season 4 promo trailer by Jon Lee Brody
New "Red Daughter"-inspired poster art for Supergirl Season 4
Xander Berkeley will be playing the father of Agent Liberty in Supergirl Season 4.