Some Vampire Diaries Ponderings...

Up to 2x15 and some random thoughts....

1) I'm surprised Jenna still hasn't figured anything out yet. She's either very naive or just doesn't want to see it.

2) Since Jon and Isobel are Elena's birth parents, do we ever find out which one is related Katherine?

3) Is Elijah actually Klaus? He's giving off a weird vibe and it would be an excellent disguise.

If anyone wants to chime in without actually spoiling anything that would be cool. :-)