Legendary director George Lucas fears the dark nature of his final STAR WARS prequel, REVENGE OF THE SITH, will threaten its box office performance when it's released later this year (05).

The third episode in the series focuses on ANAKIN SKYWALKER's transformation from a promising Jedi Knight into notorious arch-villain DARTH VADER.

But producer Rick McCallum has reassured Lucas, by reminding him he's appalling at predicting how his movies will perform.

McCallum tells British movie magazine EMPIRE, "When it comes to predicting grosses, George is absolutely mad. That's probably his way of dealing with the anticipation that any film can fail. But I think, really, truly, this film won't."

18/01/2005 17:43