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The Enemy Within

Why did Vicki Robinson, a single mother and real estate agent with no enemies, disappear?

That's the question police initially asked in July 1998. When her daughter vanished, too, and two of her friends were tracked using her mother's credit card, police suspected foul play.

As this mystery unfolded, 48 Hours' Peter Van Sant tracked not only what happened in a cold-blooded crime but why? He explored the volatile dynamics of family relationships after a divorce: How could two people so close, grow so far apart to the point of no return?

The elusive truth may lie somewhere between a mother's struggle to raise a daughter alone, and a daughter's need to be loved.

Missing: Vicki Robinson was gone. So were her van and her daughter Valessa. Follow the clues analyzed by police.

The Confessions: After the capture of a fleeing Valessa Robinson and her two friends, they all confessed - but who was telling the truth?

What Drove Valessa? After her parents divorced, Valessa felt that she had lost a strong supporter, her father. She turned to drugs. What could her mother do?

At Trial: In July 1999, the first trial of Adam Davis, Valessa's boyfriend, began, followed by hers. Examine the strategies waged by lawyers from both sides.

The Verdict: For the jurors, the truth about Vicki Robinson's murder meant sifting through a maze of shifting stories and conflicting confessions of three teen-age friends. Did Valessa play an active role in her mother's murder - or was she drugged in another room? See what the jury decided.

The Road Not Taken: Valessa hadn't known her mother had planned for her to attend a school for troubled youth. But Vicki Robinson - and Valessa - never got the chance to see how it might help. See what one girl says about the difference the school can make.

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