Psychic medium Addison Lockhart jolts awake, her brow sweaty, head throbbing. The dream had seemed so real. Eleven-year-old Vivian and Grace were so full of life it was like she could reach out and touch them. But she couldn't. The twins had been dead for forty years. Why had they appeared, summoning her help? And were their untimely deaths really an accident, or was something far more sinister to blame?