A successful car salesman is killed in a hail of gunfire that erupts on his front porch.

The murder of a beloved and talented church organist sends police on a disturbing search for answers.

In Las Vegas, 41-year-old Nancy Menke, a mother of four, is found handcuffed and murdered in the passenger seat of her car; a records clerk in the insurance fraud unit stumbles upon a strange report that blows open Menke's murder case.

John Greathouse finds his stepdaughter, Kelli Bailey, murdered in her bedroom; investigators find a video tape and a dead man's forged check and hope these clues will be the keys to bringing Bailey's cold-blooded killer to justice.

Reeda Roundy and Betty Gray are found murdered in Roundy's home, along with a message written in blood, saying ``Satan Loves You;'' detectives piece together the stunning truth behind the murders with insights provided by the victims' families.

A young woman's lifeless body is found on the bank of a shallow river, and there's a note in her pocket that may point to her killer.

The body of a young woman is found in the ashes of a fire.

Patti Berry disappears on the way to pick up her child at the babysitter's, then her body is found in a secluded wooded area not far from her abandoned blood-soaked car.

A teenager vanishes from a movie theatre parking lot.

After missing newlyweds are found murdered, family members and friends point fingers at each other, leading investigators to believe someone close to the victims is responsible for their deaths.