Forensic Factor

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

How do bugs, pigs and even the weather help investigators solve crimes? From Hawaii to Lake Ontario, forensic experts reveal the clues nature leaves behind on a human corpse.

Can the sound of a suspect's voice reveal his lie? Can the crucial moment of crime, buried deep in damaged video, be revealed? Can computers isolate a guilty face in a crowd? Find out!

Criminals attempt to cover their trails using fire, water, or by chopping their victims to pieces, but they can't escape modern forensic science.

Millionaire Frank Black boards a commercial flight and disappears into thin air. Authorities believe he is murdered. But Black's body and the murder weapon are never recovered.

In 1988, motorists discover human body parts dumped along the highway, touching off a murder manhunt.

It's Valentine's morning and socialite Susan Hamilton lies nude, in a pool of blood. The science suggests a crime of both heated rage and cold calculation.

A six-year old girl, Andrea Atkinson, is found dead in the boiler room of her Toronto tenement. Forensic investigators quickly determine she has been raped and smothered.

In three days of savagery, the picturesque town Gainesville, Florida is sent reeling with shock. Five university students are brutally attacked and killed. And the killer has covered his tracks.

Karyn Slover is a small-town dreamer who's finally got her big break: she's been offered work as a model in Los Angeles. After leaving her desk at the local newspaper, she is never heard from again.

After the owner of a private school for students vanishes from his driveway, police scramble to find him with enough time to get him his desperately needed medication.

An abandoned suitcase containing a young woman's body, leads to the mystery of a second missing woman.

Four brutal murders in one bloody weekend devastate the small town of Barrie, Ontario. The prime suspects, three violent, escaped convicts, are on the loose, prompting a massive manhunt.

When a sex worker is found murdered, investigators are drawn into the dark world of high-end prostitution, undocumented Immigrant smuggling and Russian organized crime.

The murder of a gay couple in rural California has police stymied. As investigators and forensic scientists dig deeper, they suspect that the killings are linked to a series of hate crimes.

Between January 1994 and April 1996, in central Florida, the bodies of four men are found in a wooded area known as The Hog Trails. Police realize they are chasing a serial killer.

From the tips of their ears to the soles of their feet-criminals are betrayed by the clues their own bodies leave behind.

Weapons are the hallmark of violent crime. Blood spatter, explosive residue, ballistics and trauma wounds tell crime scene investigators their deadly story.

A series of bombs rocks the sleepy city of Fremont. As America's leading explosive experts sift through the evidence, they discover a plan far more insidious than anyone could have imagined.