Joe Dziemianowicz

On Christmas Eve, seven prison fugitives killed a dedicated Dallas-area cop during a sporting goods store robbery.

After slow-cooking his wife Dawn's body to render it, chef David Viens dumped it out as kitchen waste, he confessed.

Officer Martin Ganz's 12-year-old nephew was with him for a ride-along the night he was killed. The traumatized boy became a key witness.

A custody battle ignites "a Hatfields and McCoys type of dispute" and a deadly pay-for-slay plot. 

The 1881 gunfight at the O.K. Corral left three men dead and immortalized Wyatt Earp a symbol of frontier justice.

Honor was at stake in a long-simmering feud that ignited one of the most famous duels in American history. 

Fighting over land, timber rights, and even a pig fueled the enduring deadly rivalry.

A photograph of Mary Ellen Samuels naked underneath a pile of "blood money" was a key piece of evidence in the murder of her husband Bob Samuels.

Ellis Henry Greene had a dream of opening a bakery in Los Angeles, but he fell into the clutches of three men willing to murder for money.

DNA analysis revealed that the bite on the victim was made by a woman. It was the key to unlock the cold case.