I really admired the intense, full-blooded opening act. Like, really admired it. The film-making is ultra proficient, character work tight and its perspective on violence refreshingly ugly. That's possibly why it's devolution into a competent, slickly made but ultimately disposable spy thriller left me a little deflated. It's never less than moderately entertaining, but the first act promises something with a human conscience, whilst the rest is standard blockbuster padding. Ironically, if the entire film was just a professionally pieced together diet-Bourne, I'd probably be less critical, but no, the beginning of American Assassin makes a promise the rest can't match, and that's a touch frustrating.