It's a show based on characters from the Archie comics, but in a modern/anachronistic setting (it's set in the present with all the technology and social media but the cars and locations are very retro). It follows a group of teens who investigate the death of one of the resident creepy rich twins.
It wasn't as trashy as I expected but the characters aren't as frustratingly helpless and self-endangering as e.g. PLL. The murder mystery is a bit ridiculous, but compelling enough.
There are some sweet and some intense character establishing scenes that were really spot on and touching. I fell in love with Betty.