Supergirl (2015-) 
The adventures of Superman's cousin in her own superhero career.
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Supergirl: Battles Lost and Won Season 3, Episode 23
There's dead and there's not-so-dead in this season finale episode. [more inside]
Supergirl: The Fanatical Season 3, Episode 19
A disciple of Coville's escapes from what's left of his cult and gives Kara and James a journal that could help save Sam. Guardian's secret could be exposed. [more inside]
Supergirl: Shelter From The Storm Season 3, Episode 18
To erase the last of Sam's humanity, Reign hunts down Ruby while Alex and Lena keeps her hidden. Supergirl and J'onn visit Sam's mother to protect her. [more inside]
Supergirl: Trinity Season 3, Episode 17
Supergirl and the team faces off against the Worldkillers. Guardian is asked to do a difficult favor by Supergirl. [more inside]
Supergirl: Of Two Minds Season 3, Episode 16
Supergirl and Imra have different ideas on how to stop the third Worldkiller, Pestilence, as she starts her attack on the city. Sam confronts her inner demon. [more inside]
Supergirl: In Search of Lost Time Season 3, Episode 15
J'onn must help his father through his illness. Mon-El teaches Kara fighting techniques he learned in the future. Lena forces Sam to face the truth about herself. [more inside]
Supergirl: Schott Through the Heart Season 3, Episode 14
After Winn's father passed away, his estranged mother, Mary, shows up, and they must reconcile why she abandoned him while a copycat Toyman attacks them. Mon-El must tell Kara of a recent discovery. Alex finds J'onn's father, M'yrnn, has something to hide. [more inside]
Supergirl: Both Sides Now Season 3, Episode 13
Supergirl and the DEO go after another Worldkiller. The Legion tries to fix their ship. [more inside]
Supergirl: For Good Season 3, Episode 12
Morgan Edge accuses Lena of plotting an attempt on his life and Kara steps in to help her. Sam asks Alex for help with her mental issues. [more inside]
Supergirl: Fort Rozz Season 3, Episode 11
Supergirl and Saturn Girl recruit some old rivals for a mission to find a prisoner from Fort Rozz who knows how to defeat Reign. [more inside]
Supergirl: Legion of Superheroes Season 3, Episode 10
Supergirl remains in a dreamlike state after sustaining injuries. A member of the Legion of Superheroes is recruited to bring her back. [more inside]
Supergirl: Reign Season 3, Episode 9
Supergirl traces the origins of a mysterious symbol to an ancient prophecy and the mark of the World Killer, Reign. [more inside]
Supergirl: Crisis on Earth-X, Part 1 Season 3, Episode 8
Barry and Iris' wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. [more inside]
Supergirl: Wake Up Season 3, Episode 7
Kara investigates when an alien ship is found beneath National City; Hank attempts to bond with his father; Samantha looks to her estranged mother for answers. [more inside]
Supergirl: Midvale Season 3, Episode 6
Kara and Alex head home to Midvale for a little R&R. While there Kara remembers a childhood incident. [more inside]
Supergirl: Damage Season 3, Episode 5
Morgan Edge blames Lena for children getting sick from lead poisoning. Also a lot of crying. [more inside]
Supergirl: The Faithful Season 3, Episode 4
Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she's letting Ruby down, and J'onn confesses an old secret. [more inside]
Supergirl: Far from the Tree Season 3, Episode 3
Maggie reaches out to her estranged father when Eliza throws her and Alex a wedding shower, while Supergirl joins J'onn on a personal mission. [more inside]
Supergirl: Triggers Season 3, Episode 2
A thief with psychic powers attacks National City and proves to be a formidable opponent for Supergirl. [more inside]
Supergirl: Girl of Steel Season 3, Episode 1
Kara deals with her grief by focusing her energy on being Supergirl and concentrating on a mysterious new threat. Alex confesses a secret to Maggie. A citizen of National City has a mysterious connection to Kara. Lena makes a bold move. [more inside]