-- Upton police found the body of a couple, who they believe were killed in a murder-suicide. Dawn Armstrong, 37, and Thomas Lizotte, 42, of Millville, who were said to be lovers in an "on-and-off relationship," were found stabbed to death in Armstrong's Upton home. Police believe that Lizotte killed Armstrong before killing himself. [WBZTV] -- A man in his 20s was stabbed to death late Saturday night in South Boston, police say. The identity......