Tuesday

The victim had ingested a massive amount of cyanide. An unlikely clue – a flaw on a mailing envelope -- exposed a murderer who was willing to kill innocent people to get the one person he wanted.

They thought the fire would cover their crime. But one tiny clue, no bigger than a thumbtack, remained. It held all the information investigators needed to put a trio of cold-blooded killers behind bars.

For ten years, the disappearance of a college co-ed remained a mystery. And then new scientific testing cast a different light on a man who had been a suspect all along.

For sixteen years, the death of woman was considered an accident; then someone called police to suggest she had been murdered by her husband. Before the investigation could begin, the tipster was found dead… in much the same manner as the wife. Was this an unfortunate coincidence, or the MO of a serial killer?

Drowning deaths often look like accidents and water can destroy the scant clues the killer may have left behind. Investigators must turn to forensic science to solve cases where the victim is found dead in the water.

On July 2nd 1994, a 12-year-old girl was abducted from her home in northern California. The FBI knows to act fast, search wide, enlist volunteers. But as the hours slipped by, agents also realized their chances for recovering her alive grew slim.

Wealth has its rewards, but it also brings its dangers. Kidnapping is one of them. No ordeal is more horrifying for a family than to have a child taken.

Sarah Boone claims a deadly game of hide-and-seek went wrong. But videos on her phone reveal her boyfriend's final pleas from inside a suitcase—and turn an accident into a murder case.

Days after christmas 2005, the desert city of phoenix, arizona is shocked by a drive-by shooting rampage that injures multiple people and leaves two men dead. Forensics determines that this isn’t the first time the shooters have struck. It appears that phoenix police have a unique serial killer team on their hands. But just as the trail of the bloody christmas shootings is going cold, the killers come back with a vengeance. In the heat of the summer, the city is tormented by the murderous duo who get their thrills stalking and shooting innocent people under the cover of night. A challenging investigation is made worse because the shooters use a gun that’s virtually untraceable forensically. As the bodies continue to pile up, detectives race to put the pieces together to find the two killers and end their reign of terror. When at last police get the serials shooters in their sights, they must endure an agonizing night of surveillance as they follow them on the hunt. Can detectives and forensic scientists ensure that both serial shooters are convicted and taken off the streets forever?

In a jealous rage, 57-year-old professor George Zinkhan murders his wife, her lover and shoots other members of their amateur theatre troupe

Neuroscientist Amy Bishop is denied tenor, and it results in deadly consequences for her co-workers.

Terrorist bombings are what happen in other countries. Not here in the United States. And yet, in 1993, it happened in New York City.

When Erin Chorney disappears with a trace suspicion falls on the last person to have seen her, her ex-boyfriend Michael Bridges. After investigator searches come up empty handed, they orchestrate an elaborate Mr. Big sting operation to woo Bridges into

A woman’s lifeless body is dumped on a lonely mountain pass. Leads are scarce, until a seemingly unrelated murder brings Kenda within arm’s reach of her killer. But an unexpected roadblock will force him to make a painful decision.

Like many Alaskans, bakery owner Robert C. Hansen was known for his hunting abilities. In the early 1980Õs, however, his taste for hunting took a sinister turn. A growing list of missing persons and the discovery of two dead bodies led the police to begin the search for a killer who raped his victims before turning them loose and hunting them down like animals

The murder of a wealthy widow sends shock waves through a small town. The victim's own records are the key to finding the killer.

When a young single mom and her son move to a new neighborhood, she has no idea that her next-door neighbor will develop a dangerous obsession.