A&E is promoting this series as reaching the point where there are only “two episodes until check-out.” And last week, with Norman Bates (Freddie Highmore) in police custody, charged with several murders, and with the spirit of Norman’s dead mother Norma (Vera Farmiga) occupying his split-personality consciousness, things look bleak. Last week we saw her dressed as Norman, in the witness interrogation room, but we know, before long, we’ll also see him dressed as Norma, to align, finally, with the climactic plot of the 1960 Psycho movie. Which means, somehow, Norman will get out of his present dilemma, so he can return to the Bates Motel and check in, and check out, one final motel guest…