Up next, a young woman's missing and someone has stolen her identity.

No one saw her leave, no one saw her arrive back at her apartment.

But who wanted to harm her?

She had received some harassing phone calls prior to her being reported missing.

Eventually, the forensic evidence provided those answers.

Everybody in the brother was trying to make a deal with the devil.

Let he who has no sin cast the first stone.

Let me tell you, I'd have no problem cast with all the stones.

I'll hold you.

I'll hold you.

Life was an adventure for 28-year-old Denise O'Neill.

It was no trip she wouldn't take.

Virtually no activity she wouldn't try.

She always loved to travel.

She always had her swimming or having a game of tennis or scuba diving.

Going to museums and the arts, of course, anything in the arts she loved.

She just loved life.

She really loved life.

After graduating from college, Denise took a job as a waitress in Palm Beach, Florida,

while she looked for a job teaching English.

Denise was a punctual employee.

But after missing two consecutive days of work without calling in, her manager grew alarmed.

...