How surveillance technology and the ‘Reddit Detective Agency’ helped search for a killer

More than a decade ago, a frenzied 5-day search for the Boston Marathon bombers left some lessons in its aftermath.

Providence mayor: ‘Hero’ tipster that led officials to Brown shooting suspect should get full $50K

Brett Smiley, the Democratic mayor of Providence, R.I., is asking the FBI to issue a reward to the anonymous Reddit user ...