I started this show a while back, and I've got about five episodes left of season 1.
So considering some of the opinions I've read in this thread (sort of...I'm skimming it to avoid spoilers), is it worth continuing? I'd at least like to watch it long enough to learn the killer of the girl from the first season.
You would need to suffer through 21 more episodes, or we can just tell you.

I think everyone with common sense (which is something the writers clearly had none of) would have figured if you get picked up for 13 episodes than you would reveal the killer at the end of the first season in case it go canceled. They didn't do that. That was stupid, everyone ditched.