Intriguing supernatural story that follows a ghost who is offered a chance to settle some scores. Strong performances and cinematography underpin frequent jaunts through time and space, and a big nod to A Christmas Carol. The story provides no easy answers, as we're not even sure the Ghost is a reliable narrator. However, I don't believe the filmmakers are being deliberately obtuse here - too many rationalize lazy storytelling as artful. In this case, they're simply asking you to pay close attention before drawing your own conclusions.