I wonder if the Helena/Helly reveal would have been obvious without twitter/Texags/reddit? I think it would have been suspected based on the Night Gardener answer, but not clear cut.
This episode had a lot of suspension of disbelief parts, but I'll go with it for a great show. Not sure how the reintegrated Mark worked besides his wife flashing on Helena's face post sex. I"ll be excited to see them back in the office environment next week.