One of the craziest things that came out of Rogue One: A Star Wars story was how Peter Cushing was brought back to life in CGI form as Grand Moff Tarkin. He played a much bigger part of the story than we expected him to, and I loved that.

Tonight on Nightline, visual the visual effects artists at Industrial Light and Magic will talk about creating the digital characters in the film, revealing the secrets and challenges of actually being able to properly pull it off.

As a way to promote that special, a video was posted on Twitter showing the transformation of actor Guy Henry into Peter Cushing. It's pretty cool to see, and you'll get even more details on how they pulled it off tonight during the ABC Nightline special.