I saw Dual recently, and it was really good. I went in expecting something fairly basic—a science fiction action flick with lots of special effects and fighting, which isn’t usually my cup of tea. Karen Gillan is in it, so I decided to check it out anyway. It turned out to be completely different from what I anticipated. It's a genuinely smart dystopian black comedy featuring strong performances across the board. There's been quite a bit of negative reaction to it, apparently because many viewers were hoping for that straightforward action film and felt let down when it wasn’t. What struck me is that the ending seems intentionally ambiguous, offering two potential interpretations; however, depending on what people are willing to accept, you can tell how carefully they observed and considered the movie—or not. If you're looking for an action film, skip this one, but if you appreciate thought-provoking black comedies, I suggest watching it quickly.

Source on TMDB