Teddy Carver was the child Jessica DiLaurentis was babysitting when she was a teenager.
One day while babysitting, Teddy wouldn't stop crying. Jessica called Mary for help. When Mary arrived, Teddy was asleep. Jessica asked Mary to stay with Teddy while she met Matt Brooks. Mary reluctantly agreed. When Teddy's parents got back, Mrs. Carver found out Teddy was dead. Mary told the Carvers that she hadn't even touched the boy and it was Jessica's fault, but no one believed her. The Drakes put Mary in Radley (it was that or prison).