Name of movie about amnesiac kidnappers and hostages?

Question

I remember seeing a trailer a long time ago where a group of people wake up in a warehouse with amnesia and realize some of them are kidnappers and some are hostages. Anyone have any information about a movie like this? Thanks.

Answer 1

It could be the movie "Saw" or one of it's sequels.

Answer 2

Unknown

http://www.imdb.com/title/tt0450340/