It’s a week of mysteries, conundrums — conundra? Conundrae? — and confusion this week, as Wesley Morris and Alex Pappademas examine the career (lost?) arc of Harrison Ford and struggle to get a handle on Upstream Color, the new film from writer/director/actor/distributor/pig-wrangler Shane Carruth. So basically it’s a special theme week and the theme is Things That Get Really Weird In The Third Act. Plus: major, major What Lies Beneath spoilers. You’ve been warned.