At this weekend's Comic-Con, the first clip from the upcoming Silent Hill: Revelation 3D was unveiled. In the sequel to the 2006 movie, based on the video game, "Heather Mason and her father have been on the run, always one step ahead of dangerous forces that she doesn't fully understand. On the eve of her 18th birthday, plagued by horrific nightmares and the disappearance of her father, Heather discovers she's not who she thinks she is. The revelation leads her deeper into a demonic world that threatens to trap her forever." Sean Bean, Radha Mitchell, and Deborah Kara Unger return to their respective roles, and are joined by Adelaide Clemens, Kit Harington, Carrie-Anne Moss, and Malcolm McDowell.