SAN DIEGO – A graying, 53-year-old inmate sat silently in a blue prison uniform Tuesday as he was denied in his latest bid for parole from a life sentence for a murder spree in Orange County 35 years ago in which four people were shot and killed. Brett Matthew Paul Thomas, who was 18 when the crimes were committed, listened without comment as a two-person parole board at the R.J. Donovan Correctional Facility found that he would pose a significant risk to others if released back into society. Thomas will next be eligible for parole in five years.