How did Salem, Massachusetts become a Halloween destination? For centuries, the New England town avoided any association with its infamous Puritan ancestors, who executed 19 people under suspicion of practicing witchcraft. The surprising answer, author Stacy Schiff writes for The New York Times, has a lot to do with the sitcom "Bewitched." These days, Salem is rife with kitschy witches and Halloween attractions. But before the late 20th century, town citizens rarely acknowledged the Puritan trials. When playwright Arthur Miller visited Salem to research "The Crucible" in 1952, locals refused to help him. "You couldn't get anyone to say anything...