Dateline 24/7 schedule

A random post on a social networking site changes everything about a case that put two brothers in prison for more than two decades.

The investigation into the disappearance of a mother of three in Colorado reveals she was living a double life.

A tight-knit Long Island family go to extraordinary lengths to find their missing sister.

A traumatic secret tears a family apart after 27 years.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories.

The 2004 murder of a young casino sales executive in Las Vegas.

The murder of a wealthy hotel heir ignites a feud between his wife and stepdaughter.

When a California nursing student disappears during her hospital shift, her family works to locate her.

Detectives in Washington D.C. discover a puzzling connection between two women who disappeared two decades apart; an investigation reveals a sinister secret hidden along one of the busiest stretches of interstate in the country.

Investigators seek answers when a prosecutor and a district attorney and his wife are murdered within a couple of months of each other.

The drug-related death of a 17-year-old girl sheds light on a new class of synthetic drugs that has law enforcement agencies on alert.

A look at the crimes committed by Charles Manson and his followers in 1969, including archival footage and interviews with those close to the events.

Two young teachers, one from New Zealand and the other from Indiana, fall in love on the eve of the 2011 earthquake and tsunami in Japan.

The investigation into 18-year-old Hannah Hill's disappearance takes unexpected turns.

A college student is found murdered in a residential neighborhood; as police search for the truth, they are stunned to learn that one of their own might be involved.

More than two decades after a woman is murdered in what appears to be a burglary gone wrong, a detective finds information that unlocks the mystery of what actually happened.

The investigation into the disappearance of a Marine's 19-year-old wife reveals a secret love triangle and multiple suspects.

A couple's anniversary celebration ends in murder during what appears to have been a home invasion, but investigators believe the suspect might be connected to the victim.

Police suspect a murder-for-hire plot when a realtor is attacked and left for dead at a home showing and begin investigating his family and business partners.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

Four years after a 28-year-old dies after hosting a New Year's Eve party, a jury must decide if it was suicide or murder.