Filmmaker Jon Schnepp will show off the first full trailer for his Kickstarter-funded documentary about Nicolas Cage and Tim Burton’s unproduced Superman project at this week’s San Diego Comic-Con.

The trailer for The Death of Superman Lives: What Happened? will premiere Thursday at the Masters of the Web: Comic Book Movies panel. Schnepp will then release the first look for the documentary online at www.supportsupermanlives.com.

…