criminals. charlene sanders and her husband james posted a listing on craigslist to sell a family police say the female suspect and a man seemed interested and wanted to come into the family's home to talk price. that's when one man pulled a gun. two more stormed inside. the entire family, including the couple's sons, were tied up. >> they ripped my wedding ring off my finger. i kept saying, take it, take anything you want. >> reporter: police believe this was the suspect's intent all long. that they were actually combing craigslist looking for a target. >> their intent was never to buy that ring, their intent was to commit a robbery. all four had weapons and the tools to tie everybody up. >> reporter: the couple's 14-year-old son tried to intervene, his father broke loose to help, and was shot and killed. defending his son. >> my husband was a hero. he always said he'd protect his family. he always told the boys he would protect his family. and he died protecting his family. >>...