The first time Lisa O'Brien knew something bizarre was happening was when she found her 4-year-old daughter Jacie having a conversation in an empty room.
"I'd say, 'Jacie, who are you talking to?' 'My dad! Talking to daddy,'" O'Brien recalled. "She would tell me she could see him."
Jacie's father had recently died in the 9/11 attack on the World Trade Center. O'Brien said she tried to gently probe Jacie, who revealed that her daddy had been telling her "knock, knock" jokes. Jacie also...Full Story