I once wrote a short story about a man who is in need of money and out of pure desperation kidnaps a teenage girl whose parents are rich. And that's where
everything goes wrong, as it turns out that her parents are not as rich as they pretend to be. Thus, he ends up in a cabin with a kidnapee he has no use for, but he can't get rid of her either, because to do that he'd have to hurt her, and he's too afraid. He didn't really cover his tracks that well either, as it only takes the police a couple of days to find them, and by then the man is so distressed about how worthless a kidnapper he is that he's as happy to see them as the girl is. Right at the end, when he's sitting in the back of a police car, he muses that
maybe crime isn't really his thing.