List of Supergirl episodes

Supergirl is an American superhero action-adventure drama television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg (the latter two having previously created Arrow and The Flash) that originally aired on CBS and premiered on October 26, 2015. It is based on the DC Comics character Supergirl (Kara Zor-El), created by Otto Binder and Al Plastino, and stars Melissa Benoist in the title role. Supergirl is a costumed superheroine who is the biological cousin to Superman and one of the last surviving Kryptonians.

The series was officially picked up on May 6, 2015, after receiving a series commitment in September 2014, and received a full season order on November 30, 2015. On May 12, 2016, Warner Bros. Television announced that the series had been renewed for a second season and that it would move from CBS to The CW. It debuted on October 10, 2016. On January 8, 2017, The CW renewed the show for a third season. As of February 6, 2017^[update], 31 episodes of Supergirl have aired.

Cyborg Superman unleashes a virus in a bar, killing all aliens there except Mon-El, who is quarantined by DEO. Eliza, visiting for Thanksgiving, determines that the virus is Kryptonian. At the Fortress of Solitude, Kara learns that Henshaw was after "Medusa", a virus created by her father, Zor-El, to kill non-Kryptonian in case of alien invasion. At L-Corp, she stops Henshaw from getting the isotope required to disperse Medusa. Lena refuses to help when Kara reveals that Lillian is Cadmus' leader. Later, Lena willingly gives Lillian the isotope. Kara and J'onn confront the Luthors and Henshaw before Medusa is launched via rocket. J'onn fights Henshaw, becoming a White Martian, while Kara chases the rocket, which explodes and disperses Medusa. However, Lena has double-crossed Lillian and rendered the virus inert. Lillian is arrested but Henshaw escapes. Eliza cures Mon-El and uses Medusa to restore J'onn's Green Martian form. Alex comes out to Eliza, who supports her. Later, Maggie and Alex kiss after Maggie admits she does have feelings for Alex. An unknown alien race is searching for Mon-El. Barry Allen and Cisco Ramon arrive from another Earth to enlist Kara's help.

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