One of Kathleen Savio's friends says Savio was so afraid that her ex-husband Drew Peterson would kill her that she had a deadbolt lock put on her bedroom door and kept a kitchen knife under her mattress.
Kristin Anderson lived in Savio's house for two months in late 2003. Anderson testified Wednesday at a pretrial hearing to determine what hearsay evidence will be allowed when Peterson stands trial in Savio's 2004 death.
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Anderson testified that Savio described Peterson -- dressed all in black -- once putting a knife to her throat and threatening to kill her. Earlier witnesses described the same alleged attack.
Anderson says she called investigators after Savio's death, but they didn't call her back.
Peterson has pleaded not guilty in Savio's death.