The Florida toddler's death led to 'Caylee's Law' in select states, making it a felony to not report a missing child promptly.

Lee Boyd Malvo, part of the D.C. Sniper duo who terrorized the D.C. area in a series of murders, is serving life in prison without parole. But Malvo, who was 17 at the time of the killing spree, may be up for parole in 2022 due to a new Virginia state law.

Aiyana Gauvin, Adrian Jones and Roman Barreras are some of the high-profile cases from the past few years of children who were abused and ultimately killed by their parents. We speak with experts about why some parents unleash such extreme violence on their children.

We explore how anthropology research facilities work, their role in helping improve crime-solving and what motivates people to give their bodies to science.

A&E investigates attempts made by death-row inmates to donate their organs posthumously.

We spoke with legendary FBI profiler John Douglas about how a childhood injury may have pushed Joseph Paul Franklin to serial murder.

Expert FBI profiler John Douglas shares how he turned the sophisticated and cruel tactics of murderer Larry Gene Bell against him.

In 2017, Michelle Carter was convicted of involuntary manslaughter for convincing her friend to commit suicide over text message.

She abducted and abused them to get their Social Security checks.

She said a difficult childhood helped her survive.

Katie Pladl's death shows the irony of her biological mother's efforts to protect her from her father.

On February 2, 2008, a man walked into a woman's clothing store in Chicago and shot and killed five women. It's one of the worst mass murders in the city's history, and the murderer is still on the loose.

Julie Williams, Lollie Winans, Paul Fugate and others are among those who have been killed in national parks and whose cases have yet to be solved.

Genealogical DNA databases are helping solve more cold cases. We explore why that could be problematic.

In 2022, DNA extracted from the clothing of a murder victim, Kathy Halle, was linked to serial killer Bruce Lindahl, who had murdered other women in Illinois.

Advocates for Lyle and Erik Menendez, who murdered their parents in 1989, recently initiated a petition to Governor Gavin Newsom to free the siblings. After more than 30 years behind bars, is there any chance they will walk out of prison?

In 1989, Timothy Spencer, who murdered and raped four women, was the first U.S. serial killer convicted through DNA evidence.

Ken Rex McElroy, a bully who menaced the farming community of Skidmore, Missouri for years, was shot and killed on July 10, 1981 outside a local bar. Witnessing the murder were McElroy's wife and dozens of local residents. Yet the gunman has never been identified.

What causes adults to kidnap children? The perpetrators range from serial rapists to parents trying to protect their sons and daughters.

Looking back on when a brutal, satanic gang terrorized Chicago by torturing and killing women at random in the 1980s. One of the killers, Thomas Kokoraleis, was released from prison in 2019. Many are unhappy that he's a free man.

Five of the Chicago serial killer's 33 victims from the 1970s remain unidentified, but the Cook County Sheriff's office is continuing the work to ID them.

On December 28, 1956, the Grimes sisters, 15 and 12, left home to watch heartthrob Elvis Presley in Love Me Tender in Chicago. Six decades later, their inexplicable murder remains unsolved.

Serial killer Lonnie David Franklin was arrested in 2010 due to a recovered DNA sample after murdering over the course of about 25 years. Learn about his victims.

It's been over 40 years since Jeffrey MacDonald was convicted of killing his wife and daughters. But he still claims he is innocent.

In January 1977, Gary Gilmore gained international attention for his choice to die by firing squad after being sentenced to death for the murder of two young Mormon men.

The amazing 2006 escape of a 14-year-old girl from Kershaw County, South Carolina, who had been kidnapped, raped and held in an underground bunker in the woods for 10 days.

In the 2000s, the New Mexico desert became a graveyard for 11 females and an unborn child—their lives taken by a serial killer who became known as The West Mesa Bone Collector.

The convicted killer and father of 12 tortured and sexually abused his children for years, exerting such power that some of them murdered at his command.

When Mary Bailey was 11 years old, her mom asked her to shoot her abusive stepfather. She obliged. She speaks with us about how that action has affected her life.

The British socialite and Jeffrey Epstein conspirator was sentenced to 20 years in prison for her role in recruiting, grooming and abusing teenage girls over a decade. What made these girls trust her?

Decades after a series of unsolved murders of redheaded females throughout the 1980s, a profile of a mysterious serial killer known as "The Bible Belt Strangler" emerged.