Riverdale showrunner, Roberto Aguirre-Sacasa explained that the season 2 of the series will be even scarier than the first:
Season 1 was a murder mystery: it was who killed Jason Blossom? It was a crime that happened in the past. And until the very end, it was not like our characters were in danger. They were sniffing around a mystery but it wasn’t until the last few episodes when you felt like ‘Oh my God, something really bad could happen.’ Season 2, it’s still noir and it’s still crime, but it’s much more like a suspense thriller and you feel like our characters are at risk in a much more visceral way. So it’s I think a scarier season in that way.