For more than a year, angry, hateful letters were sent to a first grade school teacher in a small town in Pennsylvania. When scientists analyzed the letters, they found evidence that the stalker knew a lot about the victim - more, in fact, than anyone could possibly have imagined. DNA analysis would eventually help seal the perpetrator's fate.
Genres: Crime , Documentary
Keywords: coroner , criminal-investigation , evidence , forensic-science , forensic-technology , interview , law-enforcement , medical-examiner , reenactment , suspicion-of-murder , true-crime , whodunit