We had recently relocated to a new location and needed a babysitter for our four-year-old daughter. A sweet, sensible girl from the neighborhood offered to help. Everything appeared fine until she paused at the door to leave that night. “You should check the baby monitor recordings,” she told you. Her voice was shaking.

Confused, my husband and I sat down and watched the night’s film again. At first, everything appeared to be normal—our baby was sleeping happily in her cot. At roughly 2 a.m., the audio detected a faint voice. “Do not worry, sweetie.

They’re not your true parents, anyway.” My spouse and I froze. The voice was deep and foreign. We examined the entire house, including every window and entrance, and found nothing amiss. There are no evidence of entrance. We did not sleep that night. We never left our daughter alone again.