HOW COULD I HAVE MISSED THIS??! Janet Mcteer and Harriet Walker as Mary of Scotland and Elizabeth I. I remember reading about it because I had only just begun to know Janet McTeer thanks to her amazing Gertrude Lawrence portrayal. But Harriet Walker too? UGHHHHH 

Ditto. They are both AMAZING.
Really wish I’d seen this show.

These two ladies. OMG.