Heather Mason (Adelaide Clemens) and her father, Christopher Da Silva (Sean Bean), have been evading for years forces of a nature that she does not fully recognize. On the eve of her eighteenth birthday, plagued by nightmares and Christopher’s disappearance, she discovers that her presumed identity is false and her life’s origins too. This revelation leads her to an alternate dimension in Silent Hill,[5] with the latter also entered by a man named Vincent (Kit Harington), and Rose Da Silva (Radha Mitchell) A cult led by Claudia Wolf (Carrie-Anne Moss) and the insane Leonard Wolf (Malcolm McDowell) holds power over the town. Dahlia Gillespie (Deborah Kara Unger) from the first Silent Hill film will also appear.

Adelaide Clemens as Heather Mason
Sean Bean as Christopher Da Silva / Harry Mason
Kit Harington as Vincent
Carrie-Anne Moss as Claudia Wolf
Malcolm McDowell as Leonard Wolf
Radha Mitchell as Rose Da Silva
Deborah Kara Unger as Dahlia Gillespie
Martin Donovan as Douglas Cartland

Official Site Silent Hill 3D
Wikipedia summery of Silent Hill 3D