After 20 mins, absolutely no tension whatsoever

Rating: Null/10 (14 October 2011)

Source Code has a good idea and perhaps if it was done just slightly differently, it might have worked. Jake Gyllenhaal makes a solid leading man and the premise is pretty interesting. But roughly a third into the movie a plot twist is revealed that pretty much nullifies the entire premise. All the tension goes out of the movie, because none of it matters from this point onwards.
Gyllenhaal's character reacts somewhat erratically to the situation at hand, but you can't really blame him. But yet again the twist gives no real reason to invest yourself in this character. At that point you are left with the other side to the story. It's not really possible to divulge more without venturing into spoilers, but there is not enough to really, well, care. An alternative take does emerge in the end and is used to conclude the movie, but not enough of the script gave this enough attention to hold any merit as a hook.
Otherwise this is a reasonably good thriller. If you can find suspense in the inevitable, then you might still get something out of this.