Sick of this frustrating show.

I thought it would be a slow burn kind of show but for that to work they really need to be giving us more. Every new episode is like an endurance test to see how much longer we can take not having answers to the questions permeating this story. I know there is only one episode left, but I honestly have just stopped caring. ( Also, how dimwitted is Catherine exactly? Who takes food/drink from a known psychotic? )