(Cover) - EN Showbiz - Brad Pitt is remaining tight-lipped about Angelina Jolie's directorial debut, In the Land of Blood and Honey.

The movie, set for release in December, is a love story set in the run up to the Bosnian War. Brad himself is alleged to have a cameo.

However, the Hollywood hunk refused to give any details away while at the Toronto International Film Festival.

"I will say nothing," he told MTV.com. "Nothing, nothing, nothing, nothing."

The movie features a cast of unknown local actors and actresses and two versions have been shot, one in English and one in the Bosnian-Croatian-Serbian language. The movie is not only directed by Angelina, but written by her too.

The actress first started on the script when she became ill and wasn't allowed to be around her kids.

"I was in the attic of a house in France." Angelina said recently. "I was isolated, pacing. I don't watch TV and I wasn't reading anything. So I started writing. I went from the beginning to the end. I didn't know any other way."

Brad was in Toronto promoting his new film Moneyball with co-star Jonah Hill.

Thankfully Jonah wasn't afraid to voice his views on the project, despite having never seen it.

"It is the best college sex comedy I have ever seen in my entire life!" he joked. "I have no idea what you guys are talking about. It doesn't sound like a funny movie to me. What is In the Land of Blood and Honey?"

Although Brad doesn't want to give too much away, he is clearly proud of his partner's latest project. When it was explained to Jonah that Angelina had directed the movie, Brad was quick to highlight how involved she was in the process. "And written. Written by," he interjected. "I'm not bragging." (C) Cover Media