Famous Unsolved Codes: Kryptos. (2013)
It was decent. I think she’s got an inside track that most of us don’t and there were a few lingering questions I’ve had that were answered casually (Wha)t is your position? and that the 4th part is in fact in English. I don’t know that it helped me a lot but like I said, the real benefit lies in her casual mentions of little facts that she’s learned from direct contact with Scheidt and Sanborn.
It’s less than an hour, it’s worth watching through at least once. Hopefully the link works.