Ashley Todd, a 20-year-old college student from College Station, Texas, center, is led from Pittsburgh Police Headquarters by detectives in Pittsburgh, Friday, Oct. 24, 2008. Todd, who had told police that she was robbed at knife point, knocked to the ground by an assailant who scratched a backward letter "B" into her face with a dull knife, told investigators on Friday she had made up the story, police said.