Good Lord, it was HORRIBLE!
Had they presented Jack as someone on the autism spectrum (and please note that I have an old friend on that spectrum and he is very smart and personable), it would have been a superb story, but Sheesh, why-oh-why did he leave his mouth open so much, walk around like an automaton (sometimes) and get picky about stupid, little things, e.g. "but you weren't being careful" (the shaving scene).
I know many viewers had a beef about the narcissistic with her--and I know narcissism because I had to live with one for a while--but I absolutely didn't pick it up (or, perhaps more likely, turned it off before there was any clear indication of it).
I would really love to hear someone defend Jack's too often apparent dumbfoundedness. What was I missing?