Find out why Mary Jane Fonder fatally shot fellow congregant Rhonda Smith in an office of their Pennsylvania church, and how "jealousy" played a role.

Find out how investigators determined Tony Vick was responsible for the deaths of wives Amy Vick and Kathy Beadle.

A daughter speaks out about a life insurance policy that may have served as motive for her father to kill her mother.

After a call asking for help, Jeff Gebhardt goes missing. Hours later, officers find him dead.

Mary Jane Fonder, later charged with the death of Rhonda Smith, may also have been involved in the purposeful killing of her father and of a dog.

Investigators question the involvement of Tony Vick in another mysterious family death and a house fire.

Collier Landry speaks about a conversation he had just days after his mother disappeared.

Officers learn that Amy Vick had been in two major car crashes less than a week before her death. Latest Videos ...

Find out why Crystal Mangum is coming clean about her role in the 2006 Duke lacrosse rape scandal and admitting she lied in controversial case.

Find out why Tahereh Ghassemi was kidnapped from her Louisiana home and killed and how her ex-husband, Hamid Ghassemi, was involved and what he stood to gain.

Learn how the families of "Night Stalker" Richard Ramirez's murder victims coped with immense loss, compounded by a ...

Learn more about Ruth Marie Terry, whose gruesome murder is the subject of the Oxygen documentary Lady of the Dunes: Hunting ...