Supergirl goes to Prom, plus an exclusive look at tonight’s Philly D.A.

Here’s what’s happening in the world of television for Tuesday, April 27. All times are Eastern.
Top picks
Supergirl (The CW, 9 p.m.): Okay, so there’s a lot going on in Supergirl right now. Phantom Zone, Nyxly, Kara’s Dad, Brainy’s enormous feelings, the list goes on, but you get it—it’s a lot. And refreshingly, this week looks to be a fun change of pace, with the feelings-filled Brainy and the always excellent Nia traveling back in time to set things right by… spending some time at Midvale High?
If Brainy and Nia are both quoting Budweiser commercials, it’s bound to be a good time, right? Watch for Caroline Siede’s recap.
Philly D.A. (PBS, 9 p.m.): This Independent Lens docuseries, which premiered with back-to-back episodes last week, would have to work hard to be any more vital or timely. It follows civil rights attorney Larry Krasner in his first term as Philadelphia’s District Attorney, an unlikely victory that has allowed Krasner and his team to “attempt a fundamental overhaul of an expansive, entrenched criminal justice system.” That’s no small task to take on, as you’ll see in this exclusive clip from tonight’s episode.