Supergirl challenges Rhea to battle to save National City. Meanwhile..
Supergirl grapples with whether or not to obey the President's order..
When an alien attacks National City, Supergirl and the DEO learn the..
Alex is kidnapped and the kidnapper threatens to kill her unless Sup..
Lena’s ex-boyfriend, Jack Spheer, comes to National City to unveil..
A large bounty is put out on Supergirl and aliens from far and near ..
A new villain comes to National City, putting Supergirl on high aler..
As Alex searches for Jeremiah and Kara investigates a series of alie..
When Jeremiah Danvers is rescued from Cadmus, Alex and Kara are thri..
When Mr. Mxyzptlk, a magical imp, shows up on Earth and declares his..
After Metallo breaks out of prison and frees Lillian Luthor, the pol..
After Livewire seemingly breaks out of prison, Supergirl is intent o..
When Kara investigates the story of a missing woman, she and Mon-El ..
Eliza comes to town to celebrate Thanksgiving with her daughters. Al..
While Guardian tries to clear his name after being accused of a murd..
The Guardian debuts to lend a hand after a parasite alien drains Sup..
Supergirl must beat a ruthless new gang who has been armed with dang..
When Kara and Alex investigate the murder of an unregistered alien, ..
An attack is made on the President as hot-button, alien vs. human ri..
CADMUS attacks National City with a Kryptonite-powered villain who e..
When a new threat emerges in National City, Kara/Supergirl teams up ..