" This is often the way crimes get solved- through a side door. The clue that led to New York’s “son of Sam” killings was a parking ticket David Berkowitz was issued for parking his Ford Galaxie too close to a fire hydrant near the site of his final murder "

― John E. Douglas , The Killer Across the Table: Unlocking the Secrets of Serial Killers and Predators with the FBI's Original Mindhunter