How It Really Happened — Season 1

In a sensational televised trial, Erik and Lyle Menendez were found guilty of murdering their parents. Now, we learn the shocking motive that turned these brothers into convicted 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.

'How it Really Happened' uncovers 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.

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.

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.

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, including the Ramsey's maid, and the man who portrayed Santa Claus at a holiday party, only days before JonBenet was found murdered.

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

When the plane John F. Kennedy, Jr. was piloting crashed near Martha's Vineyard, it seemed as though the "Kennedy Curse" had claimed another victim. The country was stunned. How could this have happened? This episode examines what factors led to that fateful flight and features a never-before-seen interview with the person who may have been the last to speak with JFK Jr. just moments before the tragic accident.

This episode takes a closer look at the final days of Whitney Houston who was found dead in a bathtub at the Beverly Hilton Hotel. The pop star was on the brink of a comeback and scheduled to perform at a Grammy Awards party that night. What were the circumstances that led to her misfortune? This episode uncovers details of Houston's last days and her tumultuous relationship with Bobby Brown.

In the Spring of 1991, police had no idea a serial killer was on the loose. This gripping hour explores how Dahmer carefully selected his victims and how he evaded police scrutiny for years. The episode includes a chilling account by one of his victims who lived to tell his harrowing story.

This episode takes viewers inside the FBI's investigation of one of America's most notorious terrorists, "Unabomber" Ted Kaczynski. The nation was on edge as a string of bombings killed and injured innocent Americans. How did the Unabomber choose his targets and elude capture for so long? Also featured is a new interview with his brother, the man who ultimately turned him in to authorities.

To many, Heath Ledger had it all --baby and burgeoning career, but this episode reveals things are not as they seem. Ledger finished filming his Oscar-worthy performance of his gritty portrayal of the Joker in the "The Dark Knight." Ledger's body was found in his apartment and investigators were led to discover bizarre drawings and puzzling clues, including a diary Ledger created detailing his immersion of the Joker persona. Did this dark role impact his real life and what was his connection to Mary-Kate Olsen?

"DC Madam" Deborah Jeane Palfrey ran a high-end escort service that catered to DC's power players. She was charged with racketeering and threatened to expose names on her client list. Palfrey was found hanging on her mother's property. Investigators ruled it a suicide, but was her death something more sinister?