Anastasia is an immortal child.
We haven't seen the last of Jesse.Season 2 was filmed in late 2011, in between Seasons 1 and 2 of The LA Complex, which rules out Joe Dinicol having a scheduling conflict.
There is a conspiracy on Whitechapel.This isn't a case of Adults Are Useless, what with all the supernatural activity you'd think people would be asking questions. So many people might be dead or monsters themselves due to the vampire feeding habits. Ergo, the adults are hiding something from their children and know more then they let on. A more logical explination is that there is a hellmouth under Whitechapel.
Whitechapel are or at one point where, crosstown rivals with Bailey DownsBoth are small towns located in Canada, and Whitechapel is full of vampires, and Ginger Snaps Back The Beginning implies that there are plenty of werewolves in the Bailey Downs area so why not ?
Sarah still isn't feeding from humans, even as a full-fledged vampire.
If there is a season three, the Big Bad will be a Slenderman expy.