Avengers: Age Of Ultron might be the most secretive film released this year. Which is a surprise, given that the release of the second Avengers film was heralded by a inescapable tidal wave of promotion: a half-dozen trailers were released before it actually hit cinemas (the first at San Diego Comic Con before it even went into production; there were interviews, set reports, all of which revealed more about the film. Fans pored over every titbit, but even with the sort of rigorous analysis that comes with being an obsessive geeky type, they didn't predict every surprising reveal the film had in store. But by that same token, the film brought up plenty more questions than the pre-release marketing cycle ever did. Impressive, considering just how many such questions there are. And many of the questions raised over the course of Avengers: Age Of Ultron remained unanswered. Some of them were probably just by virtue of how hard it is to cram so much into a two hour film, with that many characters, egos and sub-plots. Some of them are probably clumsy set up for future MCU films, destined to be answered years down the line. Others still are continuations of questions fans have been asking since the first Avengers, still without explanation. What gives? Not content with giving the fans what they want, the new film gave them a lot of what they didn't, too more loose ends. From mysterious scars to premonitions, these are the twelve biggest questions Avengers: Age Of Ultron leaves unanswered.