'Rogue One: A Star Wars Story' visual effects secrets revealed

Check out the new video.

This time, the effect-makers are pulling back the curtain on how artists created a digital version of Wilhuff Tarkin —- an Imperial baddie originally played by the late Peter Cushing in 1977’s "Star Wars A New Hope."

Lucasfilm, the production company behind "Star Wars," is owned by ABC News' parent company, Disney.