Basically, take In The Line Of Fire. Add Groundhog Day.
US President is making a speech in Spain. He's assassinated. A bomb goes off.
Cue investigation.
We see this from a range of viewpoints, all of which show us a little more of
what happened, from a different angle, which finally builds into the big reveal
of what *really* happened.
It's not bad, but I wouldn't go further than that. Its major flaw is that the
plot, once revealed, isn't actually that good. The first few viewpoints are
really well done, and leave you wanting more answers, but inevitably, those
answers come, and they're silly. Eventually, the viewpoint structure sort of
breaks down towards the end, and we're in carchase and climactic faceoff with
guns kind of territory.
Ultimately, the structure's quite interesting, and make the film worth watching
- told linearly, this wouldn't be worth anyone's time. I'd give it 7/10, but
it's really a pretty average thriller overall.