Rebecca Zahau was found hanging from a balcony in the courtyard of her boyfriend's Coronado Island, California mansion. Her death was engulfed in suspicious circumstances, yet the authorities quickly ruled it a suicide. 

Part 2: Caylee Anthony vanished in June of 2008. A month later, Caylee's grandmother reported her missing, after her mother, Casey Anthony, told her that she was kidnapped. This was only the beginning of the lies. 

Caylee Anthony vanished in June of 2008. A month later, Caylee's grandmother reported her missing, after her mother, Casey Anthony, told her that she was kidnapped. This was only the beginning of the lies. 

Troubled throughout his life, rather than look inward, Elliot Rodger chose to hurt and kill perfect strangers to express his discontentment. Prior to his killing rampage, he uploaded a dark and disturbing video called "Retribution," which provided some insights into his twisted mind. 

Lyle & Erik Menendez killed their parents. They lavishly spent their inheritance; however, when they were caught, they claimed self-defense associated with sexual abuse. Where is the truth? 

Part 2, Chris Watts killed his wife, Shanann, and two young daughters, Bella and Celeste, in 2018. What drove him to commit such unspeakable acts? 

Chris Watts killed his wife, Shanann, and two young daughters, Bella and Celeste, in 2018. What drove him to commit such unspeakable acts? 

In 1992, Exxon executive Sidney Reso was kidnapped from the driveway of his New Jersey home. The kidnappers requested an unprecedented ransom of $18.5 million. Who was responsible and would they be able to pull-off the exchange? 

Former Seattle P.D. Homicide Detective Cloyd Steiger talks about his experience investigating murders and his book "Homicide: The View from Inside the Yellow Tape." 

In 1932, Charles Lindbergh, Jr. was kidnapped from his second floor nursery with his parents downstairs and awake. Bruno Hauptmann was tried and convicted, in what was known as the "trial of the century." Did he act alone?