We find out the identity of the kamina (and was I wrong!); Scott, Stiles, and Alison protect Lydia from Derek who believes that Lydia is the kamina; Alison and Erica feud over Scott; and Jackson is still attempting to fill in the missing two hours from his video.
The kanima is: Jackson! I could have sworn that we saw him at the same time as the kanima when Scott and Alison saw it at Isaac's, but I was obviously wrong. Apparently, when Derek bit Jackson something went wrong and Jackson turned into the kanima rather than a werewolf. It might have something to do with the claws to the back of the neck he took earlier or it might have to do with the fact that he is a total ass, we dunno yet. But this would explain the extra strength that he has and the extra sharp senses that he was displaying in this episode. So now there are a few questions:
 Who erased the two hours from the video?
 Who was in the car at the end of this episode?
 Can Jackson be saved or will they have to kill him?
 Why did the venom paralyze Jackson and not Lydia?
 What exactly went wrong with the bite? Could Derek have had hostile intentions and that affected the change somehow? Or maybe Jackson seeking the change out had some effect.
Watching Scott, Stiles, and Alison protect Lydia was just fun. Poor Stiles was getting thrown around by Isaac until Scott arrived and kicked his ass. Knowing she probably couldn't kill Erica, Alison was smart enough to use the venom to paralyze her. Derek is right, Scott is the Alpha of this little "pack". Derek really needs to start listening to Scott who seems to be the only one who is thinking things through properly. Of course, having Stiles and Alison to back him up probably has something to do with that, as does the fact that Scott is a protector. Derek's pack need to be more wary of Scott. He has fought them two times recently and both times he wiped the floor with them unless they could gang up on him and even then, he could beat them. The only one who has beat him so far has been Derek.
Can I just say that the chemistry teacher is a total and complete ass? He is so contemptuous of the kids and keeps insulting Stiles for no reason. And it is not fun teasing, it is totally meant to belittle him. I so want someone to kick his ass up one side and down the other, please!
Next week, the group tries to catch and save Jackson. Will they succeed?