The California Supreme Court on Monday overturned the murder convictions and death sentence for a man who killed three people and committed a series of other crimes in San Diego in 1985. The court ordered a new trial for Billy Ray Waldon, ruling unanimously that a lower court judge improperly allowed Bill Ray Waldon to represent himself at trial despite testimony at an earlier competency hearing that he suffered from paranoia and a thought disorder impairing his ability to think clearly.