Abbess and Queen Mary Stuart in “Unfinished Business”

You must leave immediately. This was an assassination attempt. You were nearly poisoned.

Queen Mary Stuart

By who?

Someone with ties to the Protestant throne of England, no doubt. They'll be found and dealt with.

Queen Mary Stuart

Poor Sister Helen. I didn't know...

That she was your taster? Every meal you've eaten has been tasted for poison since you left your mother's breast. Mary, you are the queen of Scotland.