I have a story which I have written out about half, which is pretty finalized, and holds together well I think, but still haven't decided on a last half and have several options. It's one of those thrillers of the genre, where the police are unable to crack a case, but the MC cop, who is much more personally invested and holds much more of a grudge, goes out, solves it on his own, and proves the department and system wrong. Lots of stories have followed that structure, where it's just one cop, who gets the case resolved, unlike all the others. The thing I cannot quite figure out though is, why is it that only the MC cop is able to solve it? The MC, like those other stories, is not even officially on the case anymore, has no warrants or not much legal authorization, compared to the people who are actually on it. The people who are actually on it, are going to get all the legal and technological support to do the case right, compared to the MC. So in other stories where the MC does it on his own, against others wishes but still wins in the end, how is it that the MC is the only one who can do the job, compared to others who would logically have more support and more resources to do it? As I am writing the story in different ways, I keep asking myself, why can't the other cops solve this crime compared to the MC? What's the concept or trick in that type of story structure?