So its complex, i.e don't see it unless you are completely sobre and have nothing else rolling around inside your mind! - it needs that level of concentration. Which for me was a little too much to ask after a full weeks work!!
We have our Captain (Gyllenhall) who wakes in a sort of odd chamber / capsule thing, its "Groudhog Day" (or Groudhog 8 minutes) as he keeps re-living the last 8 minutes of a Teachers life on a train, prior to it exploding and blowing everyone up - the mission, find the bomb, bomber and reasons to avoid further catastrophe. So that's it really. but how does it work? Well, that's the source code - an 8 minute window when our time is up that captures the previous moments to the end of our lives, allowing another to re-live them and use them to our advantage - confused? Good. Then we get into alternative realities so if you think "Inception" was complicated - this is on another level.
For those who pay attention there may be questions at the end - my wife and I for example left with completely different ideas of what happened - and the car journey home was spent debating each others points across. Both made sense, but in the end, take from this movie what you want to. And that's a good thing.
Add in a dodgy bomber and an America's Got Talent comedian, plus a few normals on the train and that's the cast sewn up.
I not sure if recommending this is a good thing - probably because after reading this back i have confused myself as to whats happens at the end but without telling you my philosophy on the outcome, you see it and mail me with your ideas - if they match then I'm right! if not - then we both are!!
See this if..........................................Its time to engage brain again!!