Massachusetts December 1, 2020 12:05 pm Police Offer Reward in Serial Attacker Case in Waltham A $5,000 reward is being offered for information about a serial attacker in Waltham, Massachusetts, police announced Tuesday. US & World Videos 2:04 Newton dentist office aiming to keep kids comfortable 2:08 Tension grows over campus protests in Boston 1:53 Opening statements begin in the Karen Read trial 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments