Providence, R.I., has a history of mob violence rivaling that of New York or New Jersey, but it comes with a gritty intimacy that could only be found in the nation's littlest state. Author Bruce DeSilva says that's what makes Providence the perfect place to set his crime fiction.

"It is big enough to have the usual array of urban problems," he says. "But it's so small that it's claustrophobic. It's very hard to keep a secret in places like that."