This years "American Idol" contestants were put up in an awesome $12 million everly Hills mansion.  It supposedly cost $100,000 a month to rent.

Sources say they moved out last week, because the place is HAUNTED.  Seriously.

The contestants complained of "bizarre flickering lights" and a sudden spider infestation...but the nail in the coffin, so to speak, was when several of the contestants supposedly witnessed "a bed sheet float down an empty hallway"

Well this sparks a whole new movie..