Excellent so far! ***SPOILERS***
Reece Shearsmith is playing this creep in a very suitably creepy way! Very impressive! And everyone else is good as well, as far as I can remember. I'm finding it quite riveting, even though I know the story and know pretty much what is going to happen, so I can only assume I am caught up in it because the story is being told very well.
One thing that rings untrue for me is in the second episode when he shaves his head. There is a big difference between a head that's shiny bald because the hair fell out from chemo and one that is shaved. If his hair had fallen out his scalp would not have the shadow of hair that it has when shaved. It looks obvious that he's shaved his head and that he didn't lose his hair to chemo. Are people (Simone, in this case) so gullible they can't see the forest for the trees (so to speak)? She works in a hospital, FFS. Does she really not notice the difference?