A crime scene investigator is gunned down in broad daylight. The harrowing scene is captured on surveillance video. Who pulled the trigger? "48 Hours" correspondent Erin Moriarty reports.
Genres: Crime , Documentary , News
Keywords: angry , anxious , biting , callous , cautionary , complex , disturbed , informative , magazine-show , suspenseful , suspicious , true-crime , latest-episodes , gowatchseries-watch-tv-shows-online-free