When two parents return home from a night out, they find the babysitter unconscious on the floor in the front of the children's room, their-year-old twins Kathy and Kelly gone, and a ransom note asking for eight million dollars.
The parents are a young couple just starting out, who have recently bought an old farmhouse in Ridgefield Connecticut. While they manage to raise the ransom, only one child, Kathy, is returned. When they retrieve her in the designated place, they also find a note from the abductor, saying that the other twin, Kelly, is dead and her body is dumped in the ocean.
After Kelly's memorial service, something strange happens. As the mother puts Kathy to bed, the child says "Mommy, Kelly is crying for you and she is scared." No one is willing to believe Kathy except her mother. Guided only by the telepathic communication between the twins, the mother sets out on a desperate search for Kelly - still alive, but in mortal danger.
