HLN highlights the shocking motive that turned these brothers into killers.

Lyle Menendez speaks from behind bars to Chris Cuomo, more than 25 years after he and his brother Erik were convicted of first degree murder.

New theories emerge in the O.J. Simpson case, including a serial killer's confession, a possible hit man who claims responsibility for the murders.

New theories emerge in the O.J. Simpson case, including a serial killer's confession, a possible hit man who claims responsibility for the murders.

Uncovering Prince's secret struggles from his earlier years to the final days leading up to his shocking death.

Uncovering how Anna Nicole Smith's lavish lifestyle may have contributed to her mysterious death.

Revelations of what Michael Jackson's children and staff witnessed prior to his death.

Revelations of what Michael Jackson's children and staff witnessed prior to his death and an investigation into the claims that Jackson took his own life.

Investigating a wide range of suspects and evidence in the killing of JonBenet Ramsey.

The aftermath of the investigation into the murder of JonBenet Ramsey.

Examining the factors that led to the crash that killed John F. Kennedy Jr. and a never before seen interview with a person who may have been the last person to speak to JFK Jr, moments before the crash.

Examining the factors that led to the crash that killed John F. Kennedy Jr. and a never before seen interview with a person who may have been the last person to speak to JFK Jr, moments before the crash.

A look at new details surrounding Whitney Houston's last days and her tumultuous relationship with Bobby Brown.

The chilling account of a man who survived his encounter with the notorious serial killer, who managed to evade police scrutiny for years.

David Kaczynski, the brother of convicted Unabomber Ted Kaczynski, discusses the hunt that led to the capture of his infamous sibling.

Heath Ledger's death is examined.

Deborah Jean Palfrey threatened to expose names on her client list and was found hanging on her mother's property.