Okay I really liked this one. Though I seem to be in a minority hehe.

Warning: Do not open the next review if you have not watched the whole season!!!

Just a thought though, why do people put spoilers about the later episodes in here??

I got spoilt about the misterious time traveller while reading the other review here. I mean there's the warning about spoilers, but you should only spoil the episode you are currently reviewing.

Anyway, it's pretty obvious in hindsight who it is but it kinda sucks, I will probably not read any review when it's something as serialised as this 4th season.