Marion parla del suo ruolo in "The Dark Knight Rises"

Asked by 24 Frames in a recent interview about her part in the film, Cotillard responded with a coy, "My role is a secret, as is the whole project." So speculation about who she'll actually be -- from a love interest of Christian Bale's Bruce Wayne/Batman to a more shadowy character -- can run riot.

Cotillard did offer some thoughts on why she joined the film -- namely, a chance to reunite with Nolan. And she said she has a specific regard for Batman among pretty much all the superheroes out there.

Just what is it about Batman that makes him so appealing to the actress? It's that brooding thing. "I think it's that he's human," Cotillard said. "He can't really fly, and he doesn't have superpowers. And he has that darkness inside."