A native of San Francisco, Hanks fatally stabbed his sister-in-law in 1966 and was convicted of second-degree murder, serving five and a half years in prison before he was freed on parole. On March 3, 1977, he was arrested for questioning in the murder of Patricia Crawford, but charges were dismissed for lack of evidence when his ex-wife refused to testify in court. On June 21, 1980, the strangled body of a Palo Alto woman -- 30-year-old Arnetta Oakes -- was found in a creek bed near San Jose. Police again suspected Hanks, but it would take three years for them to make their case. In September 1982, Hanks was picked up by Seattle police and charged with twice assaulting his wife choking her unconscious each time. She testified that these were only the most serious of seven recent attacks, and detectives widened their probe, uncovering new evidence that named Hanks as a close acquaintance of Arnetta Oakes, in California. Fourteen months elapsed before he was indicted on another murder charge, and Hanks was philosophical about the case. If convicted, he declared, he would provide detectives with the details of "numerous other murders." San Francisco homicide investigators now believe Hanks is responsible for eight known slayings in their city.