california. on september 30th, 1979, dianna was nine months pregnant, and the baby was due any day. >> come on, what's the matter with you? >> that night, neighbors say they heard the couple engaged in a heated argument, just one of many in what was described as a volatile relationship. >> maybe if you didn't drink so much, i would. now leave me alone. >> at 1:30 in the morning, kevin green left the apartment for a hamburger at a fast food restaurant. when he returned a half hour later, kevin said his wife was bleeding from a gaping head wound and he phoned police. officer paul wright was the first to arrive at the scene. >> i didn't see anything obvious to me that was used to cause that type of an injury. at the time, i honestly believed she had been shot.