The murder of Shannon Saville-Cagle

It was a hot Summer day in July of 1985 in a quiet, upscale California neighborhood when a young mother was executed in her own home. 23-year-old Shannon Saville (née Cagle) had spent the day at work when she returned home to change clothes. She likely didn't see the killer coming before she was ambushed a few feet past her front door. Investigators have said the murderer tried to clean up some of the evidence. However, they left one important clue behind. The shell casing from a .9mm handgun...