Sleepwalker (2011)

Sleepwalker 2011 / 夢遊 2011 / Meng You , Meng Yau , 梦游

Yi has never imagined a revolving dream haunting her every night would evolve into to a nightmare in real life. Shortly after a dream man enters her gloomy life, Yi is set back again by a past broken relationship and becomes a suspected murderer of her ex-husband. The clearer her dream develops, the more real the accused crime appears to her. -- IMDB