I actually quite liked this episode, for a change.
We found out that Cassie's father is most likely still alive so I'm sure he'll be making an appearance soon.
We also know that Ethan (Adam's Dad) was on the boat that night when they all died. So he's lied about that.
We found out that the witch hunters started the fire and not anyone else (when they tried to burn Cassie's Dad alive) and we found out how he saved himself with the piece of jewellery that he dropped down the drain and Cassie now has. I think he dropped it down there on purpose because he knew Cassie would need it in the future.
So, for me, quite a lot went on in this episode.