If you were in trouble or ran afoul of the law, which fictional detective or investigator—from tv, movies, or books—would you want to help you?
puffdoggydaddy listed James Bond and/or Batman, but not everyone they've tried to help has survived the experience – nor have the villains necessarily been stopped permanently, never to seek revenge or seek other victims. I want to be helped by somebody with a 100% track record for locating and apprehending the guilty party. I want to be helped by someone who has never caused (or even observed) collateral damage amongst innocent bystanders (including the parties they're trying to assist). I want Scooby Doo and the Scooby Gang on my case.