SEASON FINALE: This series has done so well its first season, in introducing new characters and doing new things with established ones from Victorian-era literary ones, that this Season 1 finale is something to approach with great anticipation. That’s especially true since it’s titled, and set in the on-stage world of, “Grand Guignol” – the early theatrical equivalent of splatter films and horror movies. Meanwhile, the characters who have stood together up to now begin to divide – but not to conquer.