Juggling a double life as both a reporter and Supergirl gets tougher for Kara with a new romance, a new boss -- and a visit from her cousin, Superman.

1. The Adventures of Supergirl 42m When a commercial space shuttle suffers engine failure, Kara's cousin Clark Kent is on hand to help her save the craft and investigate the incident.

2. The Last Children of Krypton 42m Supergirl is injured by a villain using kryptonite weapons to attack National City, and Superman places the blame squarely on Hank and the DEO.

3. Welcome to Earth 42m Kara and the DEO fear that their escaped detainee is behind attacks on President Marsdin, who is visiting National City to sign an alien amnesty bill.

4. Survivors 42m The corpse of an unregistered alien leads Kara to an underground "fight club" where aliens duel to the death under the supervision of Roulette.

5. Crossfire 42m When a gang of ruthless thieves using alien technology attacks Supergirl, she discovers that Cadmus is the source of their advanced weaponry.

6. Changing 42m When J'onn and Kara are attacked by a scientist infected with an energy-draining parasite that saps their powers, the Guardian comes to their aid.

7. The Darkest Place 42m On a mission to rescue Mon-El from Cadmus, Kara encounters the real Hank, who is now Cyborg Superman. The Guardian is falsely accused of murder.

8. Medusa 42m Kara tries to enlist Lena Luthor's help to prevent Cyborg Superman from releasing a Kryptonian virus that was created by her father, Zor-El.

9. Supergirl Lives 42m Investigating a missing person case, Kara and Mon-El are transported to the slave planet Maaldoria, orbiting a red sun that robs them of their powers.

10. We Can Be Heroes 42m After a battle with Livewire, Kara is angry with Mon-El for ignoring her order to protect civilians, and with James, who reveals his secret identity.

11. The Martian Chronicles 42m J'onn takes M'gann to the DEO for protection when her ex-lover Armek arrives on Earth to apprehend and return her to Mars for execution as a traitor.

12. Luthors 42m Refusing to believe that her friend is guilty, Kara tries to clear Lena's name when she is accused of helping Metallo and Lillian escape from prison.

13. Mr. & Mrs. Mxzyptlk 42m When a trickster imp named Mxyzptlk appears with a marriage proposal for Kara, she and Mon-El must devise a way to stop the fifth-dimensional menace.

14. Homecoming 42m The Danvers family is thrilled when J'onn and Kara rescue Jeremiah from a Cadmus convoy, but Mon-El soon becomes suspicious of his sudden return.

15. Exodus 42m Kara pressures Snapper to run a story about Cadmus kidnapping aliens for relocation to another planet, while Alex and Maggie search for Jeremiah.

16. Star-Crossed 42m When the Daxamites demand the return of Mon-El to his home world, Kara discovers he is a prince who is expected to lead the rebuilding of his society.

17. Distant Sun 42m A series of attacks on Kara by alien bounty hunters leads Mon-El to suspect that his parents are behind them, in an effort to force him back to Daxam.

18. Ace Reporter 42m Lena's ex-boyfriend Jack announces a groundbreaking nanobot technology, but she, Kara and Mon-El discover that Jack is under his creation's power.

19. Alex 42m A childhood friend of the Danverses who knows Kara's secret kidnaps Alex and demands that his father, a notorious criminal, be released from prison.

20. City of Lost Children 42m When an alien from a normally peaceful race attacks National City, Kara, Mon-El and James discover a transporter created by Lena and the alien Rhea.

21. Resist 42m The Daxamites invade National City, but Kara, Mon-El and their friends are able to turn the tide against Rhea, who unveils a startling secret weapon.