Two disturbed people alternate telling you their stories about a tragic event while you try to figure out if they are lying. A long way from Rashômon, but insightful into manipulative personalities and how the media makes stories out of crime -real or imagined.
By the way, check out this discussion of "time machine fiction"...http://www.prospectmagazine.co.uk/arts-and-books/the-rise-of-time-machine-fiction