December 23, 2014 6:05 pm Convicted Killer Linked to Cold Case Murders in Mass., NH Police say the same man is responsible for cold case murders in Massachusetts and New Hampshire that went unsolved for decades. US & World Videos 24:50 @Issue: Biden signs the foreign aid bill, and a retrospective of Boston's 2024 Olympics bid 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 5:39 Billerica police sergeant hit and killed by excavator during construction detail