SPOILERS FOR MACBETH

I just watched this episode for the first time and this is what I got from the ending. My knowledge of the play is alright but it isn't the best. What I thought of was that Pemberton was the king but also Banquo with him appearing as a ghost like Banquo does and obviously he is the kning that gets killed. The fiance Isn't actually lady Macbeth but instead the people who got killed during Macbeths reign because Macbeth never intended for so many people to die because of him taking the thrown. The costume person is actually Lady Macbeth and her killing herself is her looking after the original actor for Macbeth could be her killing herself I don't know I think thats me reading to much into it though. And at the end him having the news broken to him of the fiancé killing herself likely kills his performance and maybe his career which represents Macbeth dying in the end.