Read the comics. Joe Chill killed the Waynes. The 89 movie is great but Burton and that other writer changed the script so that Jack was the Killer, Samm Hamm who wrote it did not want that to happen, but they were shooting in England and Samm was stuck in Hollywood dealing with a writers strike, he couldn't help it, but the poor guy gets blamed for it all the time. He had nothing to do with Vicki in the Bat-Cave either.
So don't blame Samm guys.
In the comic The Joker was the Red Hood when he took the plunge into the chemicals that disfigured him. An unknown guy, but according to The Killing Joke, he was a guy with a family who made the mistake of going in on a job with some crooks who screwed him over.
Who knows what the origin will be in this new Nolan movie since Nolan doesn't give a damn about the comics, and doesn't really even want to make Batman movies with the way his additude is, he didn't even want the Scarecrow to wear his mask. Goyer had to talk Chris into it.
Why bother making the movie if you're ashamed to make it, that's how he acts. Why even have Batman in costume, why even bother calling it BATMAN!
Jerk. I hate filmmakers like that. Like they're to good to make a comic book movie, when comics are better than anything they'll ever do, Nolan's no big deal, just another one who throws in a so called surprise ending. Nolan's movies are boring and predictable. The Prestige was a dull predictable joke.
And now the Joker played by Heath who is totally wrong, looks horrible, some idiot with smeared lip stick and a scar.