I don't know why this episode isn't better known. It has an excellent set up, is well-directed and extremely suspenseful. This could have been made into a very good movie. I won't go into details, except to say that it is a woman who has been become completely paralyzed and has lost her memory trying to remember why she is afraid of her husband, and letting others, except her husband, know. Excellent.
Perhaps, because it is part of the lesser-known and lesser-aired hour-long shows, but this has all of the elements of a terrific story and it is a shame this isn't included in the best-of lists that pop up now and again for this show.