'Solitude' continued Supergirl's trend of multiple storylines, with mixed success. There was a lot going on in episode 15, with subplots like James and Lucy's romance coming to an end, and Alex finally confessing to Kara that she killed Astra (which was one of the most touching scenes of Season 1 so far). We also had Smallville's ex-Supergirl Laura Vandervoort guest starring as the intriguing new antagonist Indigo.
But despite an attempted nuclear attack and Winn making out with Siobhan (what?!), the most exciting part of the episode was a small Easter Egg which flashed past very quickly...
Building Up To The Crossover
Ever since Supergirl was first announced, fans of the CW shows Arrow and particularly The Flash have been wondering if the two parallel universes could ever cross over. And now they will! We're racing towards the Supergirl/Flash crossover, which will take place in episode 18 of Supergirl's Season 1. We still don't know what the episode will be about, but the recent Flash episode 'Welcome To Earth-2' gave us a fleeting glance at Kara...
And now Supergirl has dropped a hint too, in the form of a Legion of Super-Heroes ring in Superman's Fortress of Solitude. This ring also appeared in the Flash episode, so that was a neat shared Easter Egg!
This ring actually has very interesting implications for Kara's universe, as its presence in the Fortress implies that Superman has had some connection with the Legion of Super-Heroes before. The Legion are a futuristic team of heroes, and they don't even form until around 900 years from now (they're set in the 30th-31st centuries). Superman must have had some experience with time travel in order to meet them and get this ring.
In the comics, the Legion actually contacted Clark back when he was Superboy, and his adventures with them lead him to join the team officially.
This could be a subtle hint that we'll eventually see Supergirl work with the Legion herself in the show, which would be very exciting. But for now we can just get hyped for the Flash/Supergirl crossover episode, and the first images released from the set hint at the emergence of Kara's new nemesis...
Siobhan's Gonna Become Silver Banshee
Oh, and Livewire seems to be back too, ready to cause all kinds of havoc with Silver Banshee. It's a good thing both Barry and Kara are around to stop them!
Siobhan Smythe's transformation into Silver Banshee has been hinted at for a while now, and it's going to be interesting to see how exactly the show achieves this. Her team-up with Livewire makes a lot of sense: as Cat Grant's ex-protogee, Livewire harbors a lot of resentment towards Kara's boss. Maybe Siobhan will also be jilted by the "queen of all media," which prompts her descent into villainy.
Honestly, I'm hoping this isn't rushed. Supergirl has a tendency to flash through plot-lines that have the potential to be really interesting if they're drawn out and dealt with properly (see also: Kara's relationship with Cat's son). Siobhan's entrance into the show seemed fairly stereotypical, and her dialogue was straight out of The Devil Wears Prada.
But in 'Solitude' we saw a different side to Siobhan, as she opened up to Winn about her father's affair. This hinted at some real depth to her character, and their kiss later was very intriguing. This is a relationship which deserves some real development: will they secretly date? Will Winn coax Siobhan into Kara's good books? Or will Siobhan bring out Winn's potential villainous side?
Here's hoping we get to see some of this developed before, and maybe even after Siobhan inevitably becomes Silver Banshee.
Indigo's Back & Myriad Hints
After she's dealt with those villains, it looks like Kara's still got to contend with Indigo, who was restored by Non at the end of 'Solitude.' We'll probably see a lot of this Brainiac clan-member before Season 1 concludes.
And there was a small update on the Myriad situation: Indigo made a scathing comment about Astra...
INDIGO: Her pathetic devotion to Myriad didn't land her the throne.
NON: Myriad works. And very soon Astra's dream for what Earth can become will be reality.
This implies that Myriad was something that Astra tried to implement on Krypton before she was banished to the Phantom Zone. And it might not be as fatal to humanity as we'd expected: Indigo also mentions that Astra planned to "live alongside the humans." So there's that.
All in all, 'Solitude' was crammed full of hints for upcoming episodes. As Season 1 draws to a close, we're in for some very exciting storylines!