Great episode to come back to. Haley really showed herself to be a Queen Bee-otch, esp after threatening Supergirl's family and friends. Got a big cheer out of me when Alex decked her hard! She only deserved more than that.
The thing with the invisible aliens really shows how low the Government is falling into alien hysteria-mode. I wonder how they'll pull them out of the dive.
I feel sorry for Nia, as she clearly has a crush on Brainy. I'm still hoping she and Brainy will become an item rather than him and Kara. Also, while the promo pic shows that she does look good in her new costume, I'm wondering at the need for it. The costumes are usually to keep a heroes identity a secret when they are out and about and crime-fighting. So far, Nia has only shown clairvoyance as a super power, which would lead me to view her as an intel asset and not a fighter.
Unless, there are other powers that have not yet been unclocked with her.
Also loved Brainy's moment before his memory unlocked itself!
And I totally agree with SSAV, that the final scene made the entire episode! Surprise right out of left field and something that clearly scares Kara. And seeing the promo for next weeks show, there are a lot of ramifications in Alex that they did not foresee.
I am hoping they keep this arc going for a while as it will be interesting to see how Kara handles not having that private support readily available. I think Alex will continue to be a friend and allie, but just missing that one crucial ingredient that is going to be like a massive wedge between them.
After all, the only think Alex is forgetting is that Kara is Supergirl. She will remember supporting and fighting besides Supergirl and that they are friends.
She will be a sister so close and yet too far away.
As to Kara's reasoning for becoming Supergirl, she did do it all for Alex. There was no one else she was thinking about when she tossed aside her anonymity in order to save her sister. So, not matter what reasoning came after, Kara
did become Supergirl expressly because of Alex.
Then there's the reconciliation between James and Lena. (That was a great scene in the gym by the way!) I like that they are back together and I really hope he does become the Angel on her shoulder. I will really hate it if they turn Lena full bad.