Well, I was enjoying this as "OK" until the last episode or two. I'm not sure I'll be back for S02 (well, I'm sure I'll at least start it, who am I kidding?)
I was just disappointed in the last few episodes and the ending. Mainly, I can't get over how stupid everyone is. Example: you have very dangerous, supernatural keys. You know that there's a Big Bad that wants them. You further know that Big Bad cannot take them from any of the Locke kids. And you need someone to go get a magical crown to make one of the more powerful and dangerous keys work. So what do you do? You send someone who is not a Locke to go get the crown, and take the key with them!! There's absolutely no reason for such stupidity except for plot service. And there were various other idiotic moves.
I was hoping that Kinsey's fear would show up and do something useful, but no.
I was disappointed with how they handled Erin Voss in the show; I thought the novel had a more interesting plot for her.
In general I wish that this was a one season show and had stuck more closely to the graphic novels, rather than changing things to allow for more seasons.
But maybe that's a downside of having read the source material.
Also I know these are young kids but the actor who played Bode was not, to me, that great.
On the plus side the special effects and cinematography were really good. One good thing about S02, if there is one, is there are still some really cool keys out there which I hope they'll be able to find.