Millennium Films has released a new Before I Go to Sleep trailer.  Nicole Kidman stars as a woman who loses her memory every time she wakes up.  As she learns more clues about her condition, she begins to uncover a dark mystery about why she can’t retain her memories.  Given the terrific premise and strong cast, which also includes Colin Firth and Mark Strong, I have high hopes for this one.

Hit the jump to check out the Before I Go to Sleep trailer.  The film opens in theaters on October 31st.

Here's the official synopsis for Before I Go to Sleep:

A taut thriller based on the worldwide best-selling novel by S.J. Watson, BEFORE I GO TO SLEEP is the story of a woman (Nicole Kidman) who wakes up every day with no memory as the result of a traumatic accident in her past. One day, terrifying new truths begin to emerge that make her question everything she thinks she knows about her life - as well as everyone in it, including her doctor (Mark Strong) and even her husband (Colin Firth).

Before I Go to Sleep trailer