RIVERDALE
CW, 8:00 p.m. ET
I don’t suspect that “Who killed Miss Grundy?” is going to ignite the same sort of pop-culture furor as “Who killed Laura Palmer?” – but Archie’s former teacher (and, in this steamier CW adaptation of the Archie comic universe, his lover as well) was indeed killed last week in this show’s Season 2 premiere. The culprit, who shot (but not fatally) Archie’s father in last season’s finale, is now known as the Black Hood. But, for now, that’s all that’s known about the bad guy. Or girl.