When a new threat emerges in National City, Kara/Supergirl teams up with her cousin, ...

CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously ...

An attack is made on the President as hot-button, alien vs. human rights issues heat ...

When Kara and Alex investigate the murder of an unregistered alien, the trail leads t...

Supergirl must beat a ruthless new gang who has been armed with dangerous new alien t...

The Guardian debuts to lend a hand after a parasite alien drains Supergirl of her pow...

While Guardian tries to clear his name after being accused of a murder committed by a...

Eliza comes to town to celebrate Thanksgiving with her daughters. Alex decides it’s t...

Kara is moved by the story of a missing woman named Izzy and decides to investigate d...

After Livewire seemingly breaks out of prison, Supergirl is intent on recapturing her...

Armek, a White Martian, descends on National City intent on taking M’gann back to Mar...

After Metallo breaks out of prison and frees Lillian Luthor, the police blame Lena fo...

When Mr. Mxyzptlk, a magical imp, shows up on Earth and declares his love for Kara, s...

When Jeremiah Danvers is rescued from Cadmus, Alex and Kara are thrilled to have thei...

As Alex searches for Jeremiah and Kara investigates a series of alien kidnappings, th...

A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Win...

A large bounty is put out on Supergirl and aliens from far and near attack National C...

Lena’s ex-boyfriend, Jack Spheer, comes to National City to unveil his big breakthrou...

Alex is kidnapped and the kidnapper threatens to kill her unless Supergirl releases a...

When an alien attacks National City, Supergirl and the DEO learn the alien is a Phori...

Supergirl grapples with whether or not to obey the President's orders regarding Rhea'...

Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman return...