Internet search : Craigslist says suspect left a lot of clues behind in cyberspace . rarely think about , Kaye reported . Mark Rasch says he used a tracer program on e - mail prior to slaying victim . Boston investigators even used a Google search to help track down suspect . Philip Smith , a medical student , pleaded not guilty in death of Julissa Brisman .
Internet search : Craigslist says suspect left a lot of clues behind in cyberspace . Mark Rasch says he used a tracer program on e - mail prior to slaying victim . Boston investigators even used a Google search to help track down suspect . Philip Smith , a medical student , pleaded not guilty in death of Julissa Brisman .