The Season 4 finale of Supergirl airs this weekend on The CW. 1 / 8
The network has released a set of official stills from the upcoming episode. 2 / 8
Now out of prison, Lex Luthor has set up shop in the Oval Office. 3 / 8
The character is now regarded by the general public as an American hero. 4 / 8
Joined by assistant Eve Teschmacher, Lex summons his family to the White House. 5 / 8
The photos reveal a reunion with his mother Lillian and sister Lena. 6 / 8
The episode's title is a reference to Superman IV which featured Luthor actor Jon Cryer. 7 / 8
Supergirl puts her trust in the press to expose Lex as a unrepentant villain. 8 / 8