Board Thread:Spoilers!/@comment-24674051-20150915144108/@comment-26198810-20151001210917

So, Elliot Knight filmed with the actress Caroline Ford for this episode a while ago. She is the "Caroline" actress no one knew the surname before.

Pictures: http://tinyurl.com/nrk8bvh

http://tinyurl.com/og89zge

http://tinyurl.com/od2mdq5

http://tinyurl.com/nb7bk9o

She is probably going to be Nimue, but who knows.