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A 16-year-old girl who died in 1979 was last seen at a Dairy Queen in Las Vegas.

In 1981, Linda Slaten is sexually assaulted and murdered in her Florida apartment while her children sleep.

A 22-year-old woman goes out for a jog in 1983 and never returned.

The identity of a woman who commited suicide in 1996 took decades before it was discovered.

A 22-year-old woman goes out for a jog in 1983 and never returned.

The identity of a woman who commited suicide in 1996 took decades before it was discovered.

Are you making the most of your Medicare coverage? In this program you will learn about the variety of Humana Medicare plans designed to fit your needs, your lifestyle, and your budget.

Vince Goslyn found his calling in the military. His career was thriving and he had built a beautiful family. Then one night, the father of five was gunned down.

Four days after real estate agent Beverly Carter disappeared, a grisly discovery: an elbow sticking out of a shallow grave at a cement plant. It took years to figure out how she wound up dead.

Investigation into the murder of a well-liked young woman residing in a sleepy seaside community.

A woman vanishes after allegedly having an illegal abortion; a woman's body is found tied to a tree three miles from her home.

An abandoned-ship mystery. Also: a woman's nude body is found near an elementary school.

A scam involving rare coins. Also: a man is held hostage in his basement by a con artist and his wife; the bodies of two girls are recovered from the Arizona desert.

A bowling-alley robbery. Also: the conviction of a Chicago gynecologist in the murder of his wife raises questions about the evidence.

A boy vanished in 1980 on Valentine's Day; a newborn was kidnapped from a hospital; a cop was gunned down in his kitchen.

Insights into the real story of the private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family and the investigation into her death.

New interviews with insiders provide a peek into Charles Manson's world.

The murder of a commander shocks the army world. One clue reveals a breathtaking betrayal in a place where loyalty is prized.

Investigation into the murder of a seemingly devoted father in California.

A 22-year-old woman goes out for a jog in 1983 and never returned.

The identity of a woman who commited suicide in 1996 took decades before it was discovered.

The body of a little girl is found in the Arizona desert. Detectives are unable to identify her so the local community lays her to rest with the name "Little Miss Nobody".

Arapahoe County, Colorado, 1983. The body of Sylvia Quayle is discovered by her distraught father in her Cherry Hills home.

The body of a little girl is found in the Arizona desert. Detectives are unable to identify her so the local community lays her to rest with the name "Little Miss Nobody".

Arapahoe County, Colorado, 1983. The body of Sylvia Quayle is discovered by her distraught father in her Cherry Hills home.

Are you making the most of your Medicare coverage? In this program you will learn about the variety of Humana Medicare plans designed to fit your needs, your lifestyle, and your budget.

Join Connie Craig-Carrol and health expert Ken Meares in this eye-opening discussion about OmegaXL. Learn how this unique supplement can help you fight the limitations of joint pain and embrace an active lifestyle.

The murder of a commander shocks the army world. One clue reveals a breathtaking betrayal in a place where loyalty is prized.

A closer look into the circumstances surrounding the murder of a couple who collected memorabilia.

A recent high-school graduate is miraculously found alive after she and her friend are brutally attacked just outside of Corpus Christi.

Paranormal activity in a couple's new home; claims of a coerced confession for a crime from a mildly retarded man.

Dogs' extrasensory powers; searching for a serial killer linked to the murders of 11 prostitutes. Also: foul play is suspected in a car crash; a woman recalls a past life under hypnosis.

A journalism student is slain while writing a report on an alleged date rape; a woman tries to prove that her husband survived the Vietnam War.

Virgin Mary sightings from 1917. Also: an alleged paedophile claims to be a Scottish prince.

A haunted plantation; a woman is murdered in her truck by a single rifle shot.

An Army lieutenant vanishes after participating in atomic tests in Nevada; burglars dug tunnels to rob two banks in Los Angeles.

Details from unsolved cases are examined via interviews, reenactments and news footage in this documentary series.

Details from unsolved cases are examined via interviews, reenactments and news footage in this documentary series.

Details from unsolved cases are examined via interviews, reenactments and news footage in this documentary series.

Details from unsolved cases are examined via interviews, reenactments and news footage in this documentary series.

A woman vanishes after allegedly having an illegal abortion; a woman's body is found tied to a tree three miles from her home.