You never wondered what happened when the witch-victim siblings grew up? This movie will fix that for you. Slated for a Jan. 11, 2013, release, the movie stars "Avengers" actor Jeremy Renner and "Prince of Persia" lead Gemma Arterton. They play the adult brother and sister, who now work as bounty hunters killing witches. "It's in a wonderful fairy tale world that's a bit gritty, a bit fun," Renner told MTV. "It should be a good ride."