Amber Frey

Known around the world as "the other woman," Amber Frey was at the center of Scott Peterson's trial for the murder of his wife, Laci Peterson, and their unborn son, Conner.

Laci was reported missing on December 24, 2002, allegedly last seen walking her dog in a Modesto, CA, park. Her family pleaded for her safe return and her husband, Scott, appeared to lead the search efforts. Scott, however, had been keeping a big secret: his relationship with Amber.

Scott quickly came to be the prime suspect in Laci's disappearance, and police asked Amber to record her telephone conversations with Scott. Meanwhile, Scott maintained his complete innocence.

Then police recovered Laci and Conner's bodies on the shore of San Francisco Bay, just a few miles from where Scott claimed he was fishing the day they disappeared. Less than a week later, Scott, now with blond hair and a beard, was arrested near the Mexican border and charged with two counts of murder.

Those taped conversations and Amber's testimony became the centerpiece of the prosecution's case against Scott.