Mari Gordon-Rayborn rummages through plastic bag after plastic bag, sometimes returning to the same one to scour through in search of something seemingly unattainable. The backseat of Gordon-Rayborn's white Nissan Versa is filled with white plastic bags, her life's possessions since becoming homeless in 2012. The little sedan has been Gordon-Rayborn's home for nine years. She parks it every night on the outskirts of El Cajon and Santee, less than two miles from Santana High School where in 2001, her son Randy was shot dead in San Diego County's deadliest school shooting. MORE: https://www.cbs8.com/article/news/investigations/a-mothers-unending-grief-the-killer-is-up-for-parole/509-227cd17c-fc23-4827-ba9d-e3f5ff2aeec7