The sudden deaths of Paul Walker and Philip Seymour Hoffman took place while both were in the middle of filming upcoming projects.
As a result, upcoming films "Fast & Furious 7" and "The Hunger Games: Mockingjay - Part 2" will use special effects to replace and recreate the actors' performances.
They're not the only two stars whose deaths forced Hollywood to use a mix of CGI and special effects to finish a film.