When the supposed great-niece of Marilyn Monroe, Krystal Jean Baker, 13, is found dead beneath a bridge in Texas' Bayou Country, investigators are stumped. The quest to track down her killer will take investigators 14 years, and lead to a new law.

After a beloved pastor's second wife is killed in a car crash, it raises suspicions over the death of his first wife. Her death never sat easy with distinguished pathologist Dr. Wayne Ross, who is eager to reopen the older case he never forgot.

Tell Me How I Died

During a welfare check, authorities discover a man has been living with the mummified bodies of his wife and daughter for years. Local pathologists cannot determine if they died naturally, or if something nefarious occurred.

Green Eyed Killers

On December 2nd, 2001, the Phoenix Police Department received a frantic 911 call. Unable to reach his estranged wife, Dawn Tucker, Kenneth Subia had ventured into her apartment in order to drop off their two kids.

David Ford, a Lebanon Police Officer in Kentucky, and his wife, lived what appeared to be a normal life until February 2009, when a shocking event unfolded. David was found shot to death in their home.

#TextMeWhenYouGetHome

Those closest to Madison Nygard share the agonising details around the beautiful, 16-year old's terrifying abduction as she walked home from a party. Her mother, friends and authorities explain how Madison's attack would ultimately uncover clues.

The key to solving the toughest homicides lies somewhere within the final 24 hours of the victim's life.

A predator sneaks in with a master key and strangles a young single mother.

Homicide's Elite

A devoted mother of two doesn't come home, leaving her family fearing for her safety. As detectives gather information, they are approached by a man claiming the woman may be deceased based on a confession he heard from a friend.

An Hour To Kill

Despite there being several signs Julia and Tim aren't a good match, Julia decides to go ahead with the wedding anyway. When she doesn't return home from shopping, the whole community pitches in to find her, but her husband Tim isn't helping.

When young mother Selonia Reed is found brutally murdered in her car, detectives turn over every rock in the small town of Hammond, Louisiana, in search of her killer. Selonia's case languishes for more than 30 years before justice is finally served.

In an emotional tribute, witnesses and victims' relatives look back on the tragic murder of 16 children and a teacher at Dunblane Primary School in Scotland, 15 years ago.

Eight-year-old Sarah Payne's disappearance and murder shocked the nation. Here, Sarah's mum reveals her tireless campaign to protect other children from paedophilia.

Murder By Medic

On a November evening, a woman calls 911 for her husband Greg after finding him unresponsive and, bizarrely, covered in rose petals. Is it murder?

Witness To Murder: Digital Evidence

Detectives in Aurora, Colorado gather crucial information about a double-homicide from neighbourhood surveillance footage, but they're not able to identify and track the killer until some key digital data is uncovered.

A gunman kills reformed ex-gang member Aaron Iturra while asleep in his bed. Ultimately, Oregon detectives piece together the link between a mysterious phone call, a local anti-gang activist, and a stolen pack of cigarettes.

Court Cam

A judge gets creative for the sentencing of a woman who threw her food at a restaurant employee; a teacher accused of being drunk at school is arrested for public intoxication at her plea hearing; and more.

Court Cam

A murderous gang member starts a courtroom melee; a hit-and-run suspect tries to run from court; a murder suspect's mom screams at a judge; and more.

Green Eyed Killers

In Temecula, a southeastern city in Riverside County, California, the quiet bedroom community is rattled when 22-year-old Maria Ines Lopez goes mysteriously missing. On October ninth of 2005, she meets with her ex-boyfriend, Gustavo Valencia.

A gunman strikes down an Atlanta man in his SUV on the side of a highway.

A bookkeeper takes her last breath on the driveway of a wealthy client.

When young mother Selonia Reed is found brutally murdered in her car, detectives turn over every rock in the small town of Hammond, Louisiana, in search of her killer. Selonia's case languishes for more than 30 years before justice is finally served.

When a gunfight erupts at a local biker bar and claims the lives of two men, Lt. Joe Kenda must delve deep into the world of an infamous biker gang to determine if the cause behind the violent encounter was gang rivalry or something more personal.

George Ferribee, a loving son led astray by addiction, is found executed. When Lt. Joe Kenda learns the victim had recently been kidnapped, he assumes the crimes are related... but soon discovers things are much more complicated than he had expected.

Somebody's Hiding Something

Walter Zucchetti is a fun-loving bachelor, just trying to get by. So, when the 66-year-old is found dead in his apartment with red tape covering his mouth, it’s hard for anyone to imagine who could have harmed his gentle soul.

The key to solving the toughest homicides lies somewhere within the final 24 hours of the victim�s life. This true-crime documentary series follows investigators as they piece together events during this critical window.