Shreveport Police are investigating a Wednesday afternoon stabbing death, the first of 2007, as a justifiable homicide. It happened around 4:30 in the 8900 block of Brookwood. Police say 19-year-old Calvin Edwards` girlfriend stabbed him twice in the neck during a domestic dispute. He later died at LSU Hospital. She was questioned and released. Her name is being withheld because she isn`t being charged.