Inspired by true events. On an isolated stretch of land 50 miles outside of San Francisco sits the most haunted house in the world. Built by Sarah Winchester, (Academy Award®-winner Helen Mirren) heiress to the Winchester fortune, it is a house that knows no end. Constructed in an incessant twenty-four hour a day, seven day a week mania for decades, it stands seven stories tall and contains hundreds of rooms. To the outsider it looks like a monstrous monument to a disturbed woman's madness....