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After 23-year-old Ashley Kline is found murdered in a Pennsylvania wildlife preserve, investigators must piece together the last few moments of her life to determine who killed her.
In North Carolina, a young woman's killer keeps police guessing until he slips up and finally gives them what they need to put him behind bars.
When a 5-year-old girl describes her mother's killer as being a ninja, police puzzle out the truth behind the child's description as they put the murderer behind bars.
Police make an arrest in the contract killing of a California businessman and realize it's just the beginning of the story.
In Santa Monica, Calif., a man who killed an art teacher remains at large for years as police use every trick in the book to hunt him down.
In Fort Pierce, Fla., a tax attorney is found strangled to death, and detectives must scrutinize deadbeat tenants and delinquent clients while hunting for his killer.
An elementary school teacher goes missing after her first day at a new job, and investigators sift through clues to uncover the heartbreaking truth behind her sudden disappearance.
In Stockton, Calif., investigators search for 23-year-old Dalene Carlson who has gone missing, then a tractor operator makes a gruesome discovery in a cornfield.
In 1988, a 9-year-old girl goes missing in Great Falls, Mont.; the case goes cold until a chance encounter at a bus stop breathes new life into the investigation and leads to the horrifying truth behind the girl's disappearance.
A student is brutally murdered while at home sick.
A tireless investigation finally unmasks a killer years after the body of Susan Schumake is found near a trail on the campus of Southern Illinois University.
In Springfield, Ill., an infant girl is found in a sweltering sports utility vehicle, leading to the discovery that the baby's young mother has gone missing; a frantic search leads to an eerie sight at the edge of town.
In Southern California, police investigate the murders of married entrepreneurs who may have found out the hard way that no amount of money is worth losing one's life over.
A fun-loving New Jersey woman buys a home close to her family, then the wrong houseguest proves deadly, and police must dig through the victim's life to find an enemy who hides very close.
In Summit Township, Mich., a mother is gunned down in her home in the middle of the night; suspicion swirls around those closest to her until it is revealed that being in the wrong place at the wrong time can result in paying the ultimate price.
In Costa Mesa, Calif., the murder of a young girl and the disappearance of a former U.S. Army solider lead investigators down a dark path as they delve into the mind of an unassuming killer.
A recent law school graduate goes missing weeks before the bar exam; family, friends and investigators collaborate to solve the mystery of her disappearance; a revelation puts her inner circle of friends under suspicion.
An unthinkable murder and miraculous story of survival take shape in a small Gulf Coast, Texas, town; a quiet night out for teenagers turns into every parent's nightmare when a killer stumbles upon his unsuspecting prey.
In a Georgia suburb, a woman is killed while her best friend is hospitalized in a separate attack; investigators seek to uncover connections showing that some members of the victims' families are much closer than anyone knew.
Police first rule a mother's death in a bath to be an accident, but when evidence doesn't add up, the case turns into a murder investigation; two more victims become connected to the murderer, whom cops must hunt down before he strikes again.
A mother of three adult children is stabbed in her home in the middle of the day; detectives find a few unlikely suspects while scrutinizing the victim's life; however, it will take years and one bold wiretap to uncover what really happened.
A farm foreman dies in what looks like a deadly accident, however, the ATF confirms the foreman's death came about as the result of a bomb, and the killer eventually gets brought down with the help of a little sunlight.
A couple is gunned down in their home in the middle of the night; evidence points to the couple's relatives, sending cops down a path that has dire results for a suspect.
A teenage girl has been missing for a month before she is found murdered in tranquil La Porte, Ind.; dogged investigators spend 15 years searching for the victim's killer.