Jeremy Marsh, a science journalist and professional skeptic, finds himself in over his head when he arrives at the small town of Boone Creek, North Carolina, and falls head over heels for the granddaughter of the supposed town psychic.

What's so perfect about the past for Sybil and Blake Gregory, a successful Manhattan couple with three children who land in San Francisco when Blake impulsively accepts the job of a lifetime as CEO of a start-up? The family moves into a grand, surprisingly affordable Pacific Heights mansion and soon meets the affable Butterfield family, who lived there a century ago. Of course the Butterfields are ghosts, and only the Gregorys can see them, but that...