Last episode of "Supergirl" seen the return of Jeremiah Danvers back into the arms of Alex and Kara, to their mother. After held captive for years in Cadmus, Jeremiah got recently out and a secret lingers around him. The return of their father also arises doubts, Mon-El finds the timing suspicious and feels something's not right. And he is.

The upcoming "Supergirl" Season 2 Episode 15 titled "Exodus," has official synopsis revealed the plans of Alex and Kara. As Alex finds Jeremiah and Kara, the sister would realize that they needed to break several rules to roll out new Cadmus plot. Kara will be having a deal with Snapper in order to pull off the mission, she needed Snapper to help her stop Cadmus, ComicBook has reported.

Meanwhile, Mon-El is not so convinced how Jeremiah escaped Cadmus and timing was just odd. Little did he know that Jeremiah has his little secret as he steal the files of the National Alien Registry from the DEO. Mon-El didn't get wrong about what he feels as Jeremiah became a true foe and solidify his allegiance to Cadmus.

Cyborg superman also teases his appearance and ignites the war against the Girl of Steel. Kara must end the madness as her lovingly father turns into someone else she never thought of. Also, Danvers in return, knows the little secret of Mon-El.

"I know who you are, and I doubt Kara would like the truth," Jeremiah said to Mon-El in "Supergirl" Season 2 Episode 15. Furthermore, it seems that Kara runs out of people whom she can trust, Kara's investigations to recent deals of alien kidnappings, Winn's new girlfriend include, Comic Book Movie has reported. 

It turns out that Winn's new girlfriend has a connection to Cadmus all along. The upcoming episode of "Supergirl" surely is an action-packed one, chasing bad people again that harms the Earth.

Meanwhile, the return of Dean Cain, Jeremiah Danvers teases the meeting with the character of Teri Hatcher, who will play as a villain in the upcoming episodes. "Supergirl" Season 2 Episode 15 "Exodus" will air on March 6, at 8:00-9:00 p.m EST on The CW.