A young woman's scrapbook offers insight into a shocking crime. (original aired S6:E11)

An elderly woman's death leads to shocking revelations about her daughter's double life.

A teen love triangle ends with a missing girl, a dismembered body and three families changed forever in East Moline, IL. (also shown as S8:E12)

A discovery in the woods leads police to a troubled marriage, a drug overdose and a deadly plot.

The premature death of a cancer victim leaves his wife facing lethal injection. (also shown as S8:E7)

A beautiful college student and a successful attorney looked the perfect couple, but a shooting reveals the shocking secrets in their relationship. After reviewing the interrogation tapes will a jury believe claims of self-defense?

A modern-day Romeo and Juliet story has a killer ending. (also shown as S8:E4)

A woman eludes police for six years after a confrontation with her neighbor turns deadly. (original aired S6:E12)

The turbulent relationship between a promising law student and her boyfriend ends with an unexpected act of violence. (original aired S6:E3)

A young widow blames depression, but was her Air Force husband's death more sinister than a suicide?

A deadly break-in pits mother against daughter, revealing a secret addiction.

The search for a missing man leads investigators to a surprising discovery.

A millionaire lottery winner goes missing, leaving his financial advisor in the spotlight.

A doting husband gunned down in Atlanta reveals a wife's secret addiction.

A military wife is caught in deadly love triangle. (original aired S6:E17)

A man's last will and testament points police to his murderer.

The anticipated conclusion to the story behind the trial that captured the nation's attention. Part 2 of 2.

A roadside shooting leaves one man dead, and exposes his wife's wild double life.

A murder in an isolated parking lot leads to betrayal, multiple suspects and a lot of finger-pointing.

A woman blames mistaken identity in her boyfriend's death, but does the evidence point to something more sinister?

When a young Marine goes missing, police uncover his troubled marriage and a deadly plot.

An early morning apartment fire in Fort Worth, TX, sparks a murder investigation when 31-year-old Ashlea Harris' body is found beaten and bound inside; detectives quickly work to solve the case and uncover an elaborate plot fueled by revenge and greed.

The story behind the beautiful suspect in a brutal murder investigation and the trial that captured the nation's attention. Part 1 of 2.

The murder of a church choir member uncovers a sordid secret and an unlikely love triangle.

Did an Ohio man kill himself? Or could his fiancé be to blame?