The season finale of Supergirl set-up an unexpected tie in to Crisis on Infinite Earths. 1 / 8
The events of season 4 pit Supergirl against Lex Luthor (played by Jon Cryer) 2 / 8
Luthor's convoluted scheme manipulated two world governments, a terrorist group and a Supergirl clone. 3 / 8
Ultimately, the whole plan was meant to give Luthor the power to kill Superman. 4 / 8
Supergirl fought Luthor, who apparently died when his armor exploded. 5 / 8
In truth, Lex teleported away, but was shot by his sister Lena in his hideout. 6 / 8
The Monitor found Luthor's body at the end of the episode. 7 / 8
It is suspected that Lex may be resurrected for Crisis on Infinite Earths. 8 / 8