Supergirl

In the season two premiere, Kara teams up with her cousin, Superman (TYLER HOECHLIN) to stop a new threat. And Hank is stunned by the pod that crashed last season.

Cadmus attacks National City with a kryptonite-powered villain who ends up seriously hurting Supergirl. And Kara meets her new boss, Snapper Carr (IAN GOMEZ).

Wonder Woman's LYNDA CARTER lands in National City as President Olivia Marsdin, who Supergirl and the DEO have been assigned to protect against an alien threat.

Supergirl and Martian Manhunter come across an alien fight club run by Roulette. Meanwhile, Hank is thrilled to have found another Martian in M'Gann (SHARON LEAL).

Supergirl takes on a ruthless new gang armed with dangerous alien technology. When Cadmus sends the DEO a video, they realize they're behind the attacks.

The Guardian debuts to lend a hand after a parasite alien drains Supergirl of her power. Mon-El considers a less than desirable new career and Alex struggles with a new reality.

While Guardian tries to clear his name, Supergirl sets out to rescue Mon-El (CHRIS WOOD) from Cadmus and comes face to face with Cyborg Superman.

When Cadmus unleashes a lethal virus for aliens, Kara enlists Lena Luthor's help. And Barry Allen arrives with Cisco Ramon to ask for Kara's help against an alien invasion.

Kara and Mon-El are transported to another planet, led by Roulette where the downtrodden are sold as slaves. Even worse, Kara & Mon-El don't have their powers.

After Livewire (BRIT MORGAN) breaks out of prison, Kara and Mon-El set out to recapture her, but Mon-El puts Supergirl before the citizens of National City.

When a White Martian (TERRELL TILFORD) descends on National City to capture M'gann, Supergirl and Hank hide her in the DEO, but he follows by shapeshifting.

After Metallo breaks out and frees Lillian Luthor, the police arrest Lena Luthor, but Kara refuses to believe her friend is guilty and fights to clear her name.

When Mr. Mxyzptlk (PETER GADIOT), a magical imp, shows up on Earth and declares his love for Kara, her rejection causes him to wreak havoc on National City.

Alex & Kara are thrilled to have their father back, but things go awry when a suspicious Mon-El starts to question him about his sudden return.

As Alex searches for Jeremiah, Kara agrees to set up an interview between Snapper Carr and Supergirl to help stop a new Cadmus plot.

TERI HATCHER and KEVIN SORBO guest star as new villains who come to National City, while DARREN CRISS makes hid debut as The Music Meister.

When a large bounty is put out on Supergirl, aliens from near and far attack National City intent on taking out the Woman of Steel. Guest star Lynda Carter returns as the President

When Lena's ex-boyfriend (RAHUL KOHLI) unveils his breakthrough in nano-technology, Kara taps into her reporter skills, which leads to a dangerous investigation.

When Alex is kidnapped, Supergirl and Maggie must work together to save her, even though they've always had different approaches to apprehending criminals.

When a telekinetic alien attacks National City, Guardian finds a scared boy named Marcus, who will only trust James. Meanwhile, Rhea's plan escalates.

Cat Grant (CALISTA FLOCKHART) returns to National City. Meanwhile, Supergirl grapples with whether or not to obey orders from the President regarding Rhea's latest actions.

Supergirl challenges Rhea in battle to save National City. Meanwhile, Cat Grant offers Supergirl some sage advice and Superman returns.