Those People Behind Us by Mary Camarillo

Each character confronts death, betrayal, financial decline, and loneliness as they search for home and community in a neighborhood where no one can agree who belongs.
Real estate agent Lisa Kensington juggles her job, her shopaholic husband, a mother who knows how to push her buttons, and teenagers with ideas of their own. Ray Gorman, a haunted Vietnam vet, lives with and cares for his aging mother. Keith Nelson, an ex-con, lives in his car, parked near his parents’ house. Sixteen-year-old Josh Kowalski works through the shock of his father’s abandonment by slamming on a drum set. Jeannette Larsen, an aerobics teacher numbed by horrific tragedy, turns away from her husband and toward reckless behavior.
In the end, they all discover that despite their differences, they are more connected than any of them would have imagined.