Mark Millar, who was the mind behind the comic book source for Wanted, says that a sequel is already in the works. Millar wrote on his forum that the film doesn't differ from the comic as much as people might expect, and that they are already planning the sequel.

Millar wrote:

And you'll be surprised how much we kept when you re-read the comic. The first half is very close (especially the training sequences, where they really did a great job, especially in that butcher's lot). But the third act is also very close. They just make Wesley's raid on The Fraternity cooler. Likewise, the twist with the Dad worked better than saving it for the end and Wesley going back to his old girlfriend and yelling at her was SO much better with The Fox being with him. It was tweaked and made BETTER, I think. Great job.

RELATED: Watch 7 New Clips from Wanted

Even the biggest change-- the loom stuff in the middle Timur wrote-- works really well. I think the fate thing really made the character more empathetic as the 'killing for fun' stuff would have made him a little hateful. They kept all the best bits and junked my over-indulgences. So I feel very happy as it was a kind of perfected version that made it to the screen. Could not be happier.

PS Wanted 2 already being planned and they've asked me how I can develop some of the other stuff from the book into the sequel. We'll see what box office is like at the weekend, but everyone knows this is going to make a LOT of dough.

Wanted is the first English-language film by Russian screen-writer Timur Bekmambetov. The movie revolves around an apathetic 25-year-old (James McAvoy) who discovers that his murdered father was a member of the Fraternity, a society of assassins with special powers. A woman named Fox (Angelina Jolie) lures him in to the Fraternity, which trains him how to use his formerly dormant powers to avenge his father's death. The film is based on the graphic novel series created by Mark Millar, and hits theatres June 25, 2008.