HOW PAUL WALKER WAS BROUGHT BACK TO LIFE IN 'FURIOUS 7'

In the pre-digital era, Paul Walker's death on November 30, 2013, would have made finishing a movie like Furious 7 a daunting task, but thank God for technology.

The general process: 1. Caleb Walker performs the scene. 2. Unused footage of Paul Walker in a similar shot, filmed at night. 3. Weta adjusts the lighting. 4. Caleb's head is replaced with Paul's in the final shot; Courtesy of NBC Universal