Fifteen years ago, Lisa walked out to get diapers for our newborn son, Noah—and never came back. No calls. No clues. Just vanished into the rain-soaked night. I filed reports, begged for…

When my five-year-old daughter, Lily, suddenly started talking about my “clone” visiting while I was at work, I brushed it off as a child’s imagination. But her strange, specific details like her…