A Missouri man goes missing, and his ex-wife holds the key to the mystery.

A nurse's life is turned upside down when her husband is murdered and a secret video shows that she's hiding something from police.

A modern-day Romeo and Juliet story has a killer ending.

Kelly Ryan and her husband Craig Titus are accused of killing their personal assistant Melissa James in December 2005, then disposing of her body in a burning car in the Las Vegas desert.

The premature death of a cancer victim leaves his wife facing lethal injection.

A yoga instructor's death reveals his girlfriend's secret double life.

A teen love triangle ends with a missing girl, a dismembered body and three families changed forever in East Moline, IL.

A young girl's death is complicated by her lesbian lover -- and her lesbian lover's husband in Easton, PA.

A beautiful young woman is caught on tape plotting to kill her husband -- but was it real or an audition for reality TV? (Boynton Beach, FL.)

A case study of Jessica Riggins, an Arizona woman who was convicted of the August 2007 shooting death of her husband.

A businesswoman seeks revenge and ends up a fugitive. Clearwater, FL.

A multimillionaire's wife plots with her brother to put a permanent end to her husband's philandering.

A bookkeeper gets behind on taxes for the family business, and her husband turns up dead before he can learn about her secret. Alexandria, Kentucky

A Canadian woman gets caught up in a love triangle... and a murder investigation. Toronto, Canada

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Forced to choose between her mother and her boyfriend, a Florida teen makes a deadly decision in West Palm Beach, FL.