Visiting an art museum displaying a retrospective of acclaimed photographer Kathy Moran's work, aspiring novelist Stacey Kim is stunned by the photo at the centre of the show - the famous "Woman with a Gun." The image captures Stacey's imagination, raising a host of compelling questions. Obsessed with finding answers, Stacey discovers that the woman in the photograph is Megan Cahill, suspected of killing her husband, millionaire Raymond Cahill, with the six-shooter on their wedding night. But the murder was never solved.