Sprock yeah! It turns out all it took to kick this season into high gear was a time travel trip back to 2009. “Prom Night!” is an absolute pleasure to watch an hour that delivers all the zippy, big-scale, open-air fun this more dour, claustrophobic season has been missing. And it’s also an episode that really rewards long-time
Supergirl fans. Particularly those with a lengthy memory of the show’s many dangling plot threads. Brainy taking off his personality inhibitors in season five? Nia’s fractured family drama from season four? Kenny Li’s deeply upsetting death from the season three Midvale flashback episode? It all gets addressed here, and all for the better.