3x16 - Ghost Whisperer

Professor Payne meets Elliot, the brilliant son of one of his old girlfriends. When Payne discovers that the boy is almost 10-years-old, he realizes he may be the boy's father. This angers his deceased wife. After watching Payne, Elliot, and the boy's mother, Melinda tells Jim she wants to have a baby. Melinda meets with Carl, a detective she hired to trace her father's whereabouts after he left Melinda and her mother. Carl stops by the house to give her the little bit of information he collected on her father and something strange happens to him while he talks to Melinda.