Did David Letterman Reveal a HUGE Spoiler from 'The Dark Night Rises'?

Uh, oh, looks like David Letterman better start sleeping with one eye open! 

The late night host might have revealed a huge secret from Christopher Nolan's highly anticipated final installment of his Batman franchise, The Dark Knight Rises last night while interviewing Catwoman herself, Anne Hathaway. 

SPOILER ALERT: If you DO NOT want to ruin the anticipation of the biggest film of the summer, stop reading! (We're serious, you've been waiting long enough). 

OK! VIDEO: NEW DARK KNIGHT RISES TRAILER FEATURES JOSEPH GORDON-LEVITT & ANNE HATHAWAY 

Dave, who appears to have seen the movie, talked to Anne about how "enormous" and "huge" it's is going to be before he apparently let the cat out of the bag and revealed that in the end, "Batman Christian Bale is dead." 

Anne stared at him in shock, and yelled, "Dave!" while he laughed, explaining, "He's not dead! He ain’t dead, just relax will ya?"

"You know this is a whole thing?" Anne said. 

"I know it’s a whole thing, but it will be fine!" Dave giggled, trying to take back what he said.

But Anne didn't find it funny, especially because she knows Mr. Nolan is going to have a conniption when he finds out Dave opened his big mouth! 

"I just want you to know the wrath that you have just invited onto yourself," she told Dave, as she pointed to him. "Chris Nolan, I had no part in it, I'm sorry." 

OK! NEWS: ANNE HATHWAY ON HER "CRAZY" DIET FOR LES MIS & HER CATWOMAN SUIT FOR DARK KNIGHT RISES 

EEK! 

The Dark Night Rises hits theaters on July 20, and we're pretty sure Dave's comment won't stop the flick from destroying box office records.