In 2008, two-year-old Florida toddler, Caylee Anthony, vanishes. Her mother, Casey Anthony tells investigators Caylee has been kidnapped by her nanny, a woman Casey's family has never actually seen. But why?

In 2008, two-year-old Florida toddler, Caylee Anthony, vanishes. Her mother, Casey Anthony tells investigators Caylee has been kidnapped by her nanny, a woman Casey's family has never actually seen. But why?

An investigation into the murder of fashion designer Gianni Versace, who was gunned down in broad daylight on the steps of his Miami Beach mansion by Andrew Cunanan in 1997.

In the mid-1970s, hundreds of people began disappearing without a trace. Families were left wondering about their loved ones for decades until shocking news about a mysterious religious group made headlines around the world.

May 2001 in Washington DC, 24 year old intern Chandra Levy vanishes into thin air. Police find her keys and her cell phone in her apartment and no sign of a struggle. Who saw her last? Where did she go?

An eight-month-old baby is fatally injured while in the care of a family's au pair, Louise Woodward. Was it child abuse or a tragic accident? Doctors suspect the former, a case of 'shaken impact syndrome,' and detectives arrest the infant's 19-year-old British nanny who cared for him in the hours and minutes before his demise. But, was the baby's death a case of intentional murder or a tragic accident that occurred under Woodward's watch?

George Michael's life as an international superstar comes to a mysterious and tragic end on Christmas Eve 2016. Family and fans are shocked by his sudden death. There are so many unanswered questions. Who was with Michael in those final hours? What happened the night he died? What did the coroner find was the actual cause of death?

It was the shocking affair that nearly toppled a Presidency. Bill Clinton and a 21 year old White House intern, Monica Lewinsky.

It was the shocking affair that nearly toppled a Presidency. Bill Clinton and a 21 year old White House intern, Monica Lewinsky.

A tale of murder, adultery, courtroom drama, and ultimately the death penalty. The story of Scott and Laci Peterson as told by those who lived it. Did Scott Peterson murder Laci?

A tale of murder, adultery, courtroom drama, and ultimately the death penalty. The story of Scott and Laci Peterson as told by those who lived it. Did Scott Peterson murder Laci?

Over three days, five college students are brutally murdered in Gainesville, Florida. As investigators search for the serial killer, panic fills the usually sunny city.

Five college students are found brutally murdered in Gainesville, Florida. However, it takes investigators months - and the discovery of a campsite, a screwdriver and an audiotape - before they can identify who the serial killer was.

On June 5th, 2002, Elizabeth Smart is kidnapped from her Salt Lake City home, snatched from her bed at knifepoint by a mysterious man in the middle of the night. To the public it seemed as if she had vanished into thin air, but she was actually taken by 48-year-old Brian David Mitchell. A look at the unbelievable nine month saga with its unforeseeable twists and turns, a police investigation that went sideways, and a family fighting to keep hope alive.

For nine months, in 2002, 14-year-old Elizabeth Smart is the most famous missing child in America. Kidnapped by Brian David Mitchell, she was forced up into a hiding spot in the mountains behind her home, assaulted and forced to be his second "wife." Following the harrowing of her nine month ordeal, including the multiple trips they took to Salt Lake City where she was hidden in plain sight. And the unbelievable end, one of the most incredible kidnapping recoveries in U.S. history.

On October 25, 1994, Susan Smith reports that a carjacker has abducted her two young sons, Michael and Alexander. This report sets off a nationwide search for the boys. While the world waits for news about the boys, investigators deliver shocking news.

For nine days, the nation waits for news as to the whereabouts of missing 3-year-Michael and 14-month-old Alex Smith. Then, there's a shocking break in the case. The boys' father, David, shares his heartbreaking story.

On Oct. 28, 2007, 23-year-old Stacy Peterson, the wife of veteran police sergeant Drew Peterson, goes missing. As police launch an intensive search to find Stacy, the case raises shocking new questions about her husband.

Actor-musician David Cassidy ("The Partridge Family") experiences the pressures of fame as a teen idol in the 1970s. In the end, his death is surrounded by mystery, leaving his family, friends and fans with more questions than answers.

On April 19, 1995, Timothy McVeigh, a 26-year-old U.S. army veteran, detonated a 7,000 pound truck bomb outside the Alfred Murrah Federal Building in downtown Oklahoma City, claiming the lives of 168 innocent people.

In an exclusive prison interview, Timothy McVeigh himself describes how events in his personal life - and in the ever-changing world around him - inspired him to take action against his fellow Americans.

In the summer of 1996, a bombing at the Atlanta Olympics killed two and injured over 100; an intense manhunt ensued, with the media and law enforcement falsely accusing security guard Richard Jewell as a suspect.

Interviews with former special agents, journalists, and Richard Jewell's associates provide insight into the case and its aftermath; subsequent bombings over the next eighteen months led investigators to suspect a serial bomber in Atlanta.

On September 29, 1982, seven Chicago-area residents were suddenly stricken with a deadly illness. At first doctors were at a loss, but they soon discovered a sinister connection: all the victims had recently taken cyanide-laced Tylenol capsules. This launched an investigation that has lasted over four decades and forever changed the way medications and other goods are packaged in stores. This episode features interviews with family members of the victims, law enforcement who were first responders on that day, medical examiners and investigators on the case.

On July 5, 1998, a wealthy widow named Irene Silverman disappeared from her New York City townhouse. While police went on a frantic search for her, they had no idea the investigation would unravel one of the most shocking series of crimes they had ever seen – a trail of violence and fraud that stretched from the Bahamas to Los Angeles perpetuated by Sante and Kenny Kimes. This episode features interviews with Sante Kimes's son Kent Walker, Sante Kimes's attorney, NYPD officers who worked the case, and a journalist taken hostage by Kenny Kimes in prison.