Whereas Marvel’s Runaways with its freshman run zeroed in on the kids’ discovery of their parents’ treachery and Pride’s subsequent suspicion that their human-sacrificing, hole-drilling jig was up, there’s a lot more afoot in Season 2 — and that’s a good thing.

First, a bit of housekeeping: Based off just a few episodes, my Season 1 review assigned the Hulu series a grade of “A-,” which in retrospect was admittedly on the high side. (I suspect that I was grading on a curve, based off “other” Marvel series released last fall. ) So, if last year in actuality netted out as a “B,...