"[It was strange] in an intellectual way," Mangold tells Entertainment Weekly of revisiting Johnny Cash. "But not at all in a real way. I found myself watching Boyd sing a song th

"Yeah, he was growing them," "A Complete Unknown" director James Mangold told Business Insider. "If you look earlier in the movie, there are some scenes where they aren't as long, but by the end, he had some full-on Nosferatu going on."