Here's one. State of Play
but more than that. pretty well EVERY film. They all have "happy" endings, or at least endings that
resolve all the loose ends.
so loads of films start with really interesting premises, but fizzle out at the end.
Yes, but it's more than possible - very common in fact - for a film to resolve all its loose ends in a very satisfying way that means the film goes out on a high. Just because the story ends doesn't mean it gets boring!