Merlin Finale Season Question

Does anyone out there know what the first episode of S5/the finale season of Merlin called? Is it "Arthur's Bane" with an original airdate of 10/13/12 - and plot summary of Merlin fears that he cannot sway Arthur from his chosen path as ancient prophecies about Mordred may come true? I'm trying to figure out if I missed the first episode. Apparently it's started on SYFY, but I don't know if it started last week or this week.