It was a real-life courtroom drama for actress Catherine Zeta-Jones. During more than three hours of testimony, the Oscar-winning actress read from 19 letters containing death threats from an accused stalker. The letters suggested Zeta-Jones would be chopped into pieces "like Sharon Tate," and referred to the violent deaths of President Kennedy and Nicole Brown Simpson. The preliminary hearing in Los Angeles will determine whether there is enough evidence to order a trial for 32-year-old Dawnette Knight. Knight apologized last month in a letter, saying she had been infatuated with Zeta-Jones' husband, actor Michael Douglas. Douglas was also on the stand to describe their ordeal. He testified that his wife needed medication to calm herself.