Kara and Maggie team up to find a kidnapped Alex.
Alex is the strongest episode ofSupergirls very uneven second season.
This shouldnt come as a surprise given the episodes title.

Credit: Dean Buscher/The CW
The hour opens with Maggie patiently talking to a criminal during a hostage crisis.
Maggie lets Kara know as much later that night, when they all gather at Alexs apartment for dinner.
Eventually, the dinner becomes too tense, and Kara abruptly leaves.
This threatening voice knows Kara is Supergirl, and thats why he knows she can handle it.
She doesnt just sit there throughout the episode.
If theres one thingSupergirlnever forgets, its that Alex is a trained operative.
Sure, shes in distress, but shes trying just as hard to be her own savior, too.
Supergirl flies off to a home registered in Ricks name and finds him there.
This ends up tying to a flashback we were shown in the first season.
He also informs them that hes been stalking them and planning this for year.
So its fair to say that Rick is tres creepy.
As the deadline quickly approaches, Kara and Maggies desperation rises.
Obviously, Kara wants to fly right there but Maggie advises her not to since Rick doesnt seemed worried.
Kara ignores her advice and wades into danger.
Unfortunately, the IP address of the camera was a decoy.
Theres a computer screen there, too, which shows Alexs cage start to slowly fill with water.
I knew Alex wasnt going to die, but I still found myself scared here.
Alexs kidnapping brings Supergirl and Maggies conflict to a head.
Thankfully, Kara arrives in time to stop her from crossing that line.
The scene reminds me very much ofHuman for a Day.
Karas words work, and Maggie and Supergirl find Alex in the nick of time.
The visual of Kara punching through that glass is particularly powerful.
It was as moving as you would expect.
At first, Lena resists Rheas business offer because she discovers shes actually an alien.
Even as Lena fights back against Rheas proposition, you could tell that Rhea has already won.
Love has definitely made many of the characters on this show act in a way they normally wouldnt.