Forensic Factor

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

The bizarre behavior of a killer is as specific as a signature. Crime fighters map the psychological and physical terrain of murderers, for example Paul Bernardo or Jon Venables.

How can the slightest impressions tips help crime fighters find their offender, like Allan Legere or Ted Bundy.

Advanced technology is used to investigate explosive residue, ballistics and trauma wounds, to reveal the weapons and the criminals who used them.

Even as a body burned to ashes, sunk deep into the sea or reduced to fragments will still tell its forensic tale. Such as the case of Sun Gym gang or in the murder of Anadeli Macedo-Moreno.

Forensic experts describe their use of hi-tech tools to solve crimes. From lie-detectors to computers which can allegedly isolate a guilty face in a crowd.

A six-year old girl is found dead in the boiler room of her Toronto tenement. Scientific tests determine that the sound in the boiler room suppressed her voice as she was suffocated. Whoever killed her knew no one would hear him.

Oklahoma City detectives finds a woman lying naked in a pool of blood. The evidence suggests a crime of both heated rage and cold calculation.

An international manhunt ensues involving seven police forces and four countries after five body parts are found on a highway.

Five university students are brutally attacked and killed in Gainesville, Florida. Authorities are dedicated to catch the perpetrator. Note: The episode features interview with Rolling himself.

A small-town dreamer finally got her big break. She's been offered work as a model by an agency. She leaves her desk at the local newspaper in Decatur, Illinois and is never heard from again.

A millionaire boards a commercial flight in New York City and disappears into thin air. Authorities believe his former business associate is the man behind the disappearance.

A series of bombs rocks Fremont, California. The targets include both the Chief and Ex-Chief of police. Can police and forensic scientists stop the bomber before he strikes again?

The owner of a private school is kidnapped from his driveway. Investigators race against time, since he is a diabetic man who desperately in need of his medication.

The discovery of an Asian woman's body in an abandoned suitcase leads North Yorkshire police to London. But instead of answers, the mystery only deepens when they discover that a second woman is missing.

The murder of a gay couple in Redding, California has police stymied. As investigators dig deeper, they suspect that the case is linked to a series of arsons that have destroyed several synagogues and an abortion clinic. The trail leads them to the sinister world of hate crimes.

When a Russian sex-worker is found murdered, Los Angeles homicide detectives quickly find the case to be anything but routine.

Four brutal murders in one bloody weekend devastate the town of Barrie. Forensic scientists find themselves in a desperate race to find those responsible.

In Central Florida multiple bodies of men are found in wooded areas. Police realize they are chasing a serial killer, but the investigation is hampered by the fact that they are unable to identify the victims.

Carole Sund, her daughter Juli and friend Silvina Pelosso go missing while vacationing in Yosemite National Park. What begins as a search and rescue operation becomes a chilling case of murder.

An elderly couple is found dead in the trunk of their car at their home. The investigation eventually leads to the couple's vacation home an hour north of the city.

For 23 days a sniper terrorizes the Washington, D.C. area. Authorities struggle to find a clue until they discover a single fingerprint, which leads to not one, but two killers.

A retired fireman on a morning bike ride notices a burning bundle in a farmer's field in Norfolk. Investigators recognizes the smell of burning human flesh.

The 1996 Summer Olympics in Atlanta are rocked by a massive pipe bomb explosion. Two person are killed and hundreds injured. Subsequent bombs at an abortion clinic and a gay bar show a similar M.O.

A serial rapist reign of terror that spans more than eighteen years. He stalks and preys on elderly women living in Colchester, Ontario. Only a revolution in forensic science can catch the elusive attacker.

A sniper targets abortion doctors creating a wide-city panic. After every attack the self-appointed angel of death disappears into the shadowy underground.

In the 1990s a string of vicious homicides rocked Farmington, New Mexico. Police have no idea that the perpetrator hides within a group of Goth youths.

The working-girls of Spokane, Washington are targeted by a cruel serial killer. On each victim's head, police find his macabre calling card – a plastic bag emblazoned with an ironic Smiley Face.

On the outskirts of Hamilton, Ontario a jogger makes a gruesome discovery – the partially mummified remains of a human body. Authorities must use special art forensics to be able to identify the victim.

Two undertakers are shot and killed while at work at a funeral home in Hudson, Wisconsin. With the help of Richard Walter the local police are determined to solve the Agatha Christie-like mystery.

In the early 2000s Baton Rouge, Louisiana is held in the terrifying grip of a serial killer. The number of victims is growing whose "low risk" lifestyle should have never put them on the radar of a killer.

A series fires rips through San Joaquin Valley, killing four people and devastating the landscape. An extensive investigation by the ATF, local police and forensic scientists reveals a common pattern among all the blazes. To their horror the serial offender is no stranger to them.

Las Vegas homicide detectives discover the charred remains of a prominent business man. Investigators are thrust into a dangerous world of high stakes deception fueled by passion, greed and revenge.

A series of bombings and bank robberies leaves a usually serene city reeling. The crimes are committed the most radical and dangerous white supremacist movement.

In small-town Bartow, Florida four bodies are found murdered in a factory. When investigators finally zero in on a prime suspect, they are foiled by his picture-perfect alibi.

The bike paths in a suburb of Buffalo, New York is taken by an evil man. The series of sexual assaults eventually escalates into murder. After decades, DNA evidence finally reveal the serial killer identity.

Police discover a millionaire brutally slain in his Horseshoe Bay, Texas mansion. Investigators are forced to navigate through a wide circle of friends – that includes rich CEOs, celebrity athletes, movie stars.

Multiple elderly woman are murdered in their home of the upscale gated community of Canyon Lake, California. Police fear there's a psychopathic serial killer on the loose.

The city of Phoenix, Arizona is shocked by a series of drive-by shooting that targets anybody. Detectives race against time to stop a team of killers.

In march 2001 multiple people had been shot in East Point, Georgia. At all scenes a piece of paper had been left with "Jack" written with a highlighter.

Someone brutally attacks two teenager girls in Abbotsford, British Columbia, killing one of them. A Special Task Force is created when the killer leaves taunting messages about the horrendous crime.

A vivacious teenage girl is found brutally stabbed to death in her car in Easton, Pennsylvania. The suspects' stories overlap and raise more questions than they answer.

In West Salem, Wisconsin, Todd Kendhammer claims his wife was killed in a car accident. However, the forensic evidence doesn't back him up. When a new defense team, known for working on the Steven Avery case is hired, they bring in their own forensic experts to contradict the state's case.

In DeWitt, New York, Leslie Neulander's death is declared accidental, forensic investigators sound the alarm that this was no accident. A close look at the 911 call, a new analysis of the autopsy report, and blood where there shouldn't be all help catch the unlikely killer.

A suitcase filled with unidentified human remains unlocks a missing person's case. Jamie Haggard disappearance in Kenmore, Washington went unsolved for two years. The forensic analysis of a nearly-destroyed cellphone found in the suitcase reveals a mysterious photo which reveals the culprit behind the murder.

When Lanell Barsock is found murdered in Palmdale, California, it seems obvious to all that her boyfriend did it. When the forensic evidence comes in, investigators are astonished to learn they've arrested the wrong person. If he is innocent, who's the killer?

Homicide investigators in Quitman, Texas are convinced an apparent murder-suicide was staged but the experienced CSI on the scene disagrees. Only the gut instincts of the cops, coupled with an outside forensic expert's opinion, convince authorities who the real killer is.

When the body of a woman is found floating in a river in Merritt Island, Florida, police find it near impossible to identify her. With only a piece of nautical rope, a strip of duct tape with a strange hair on it, and some plastic bags to go on, they use every forensic tool they have to catch her killer.

Mother of three goes missing in Fernandina Beach, Florida the day before her birthday. There is no shortage of suspects, till forensic analyst and CCTV footage point to one unlikely person of interest.

A horrific crime scene in the heart of Seattle leaves forensic investigators little clues to determine who is responsible.

An unidentified teenage boy is found dead in a Milton, Massachusetts suburban street. They can’t determine the cause of death, until the case takes an unexpected turn.

The badly burnt human remains recovered in a blazing car fire suggest Clayton Daniels died in a horrible road accident near Burnet, Texas. However, forensic evidence shows irregularities about that theory.

When a couple is gunned down in her Saint Paul, Minnesota house, a decade old search for the truth began. With two possible stories and conflicting evidence, investigators had to prove what not happened.

A body in a ditch near Bethel, Ohio is at the end of a forensic trail that begins at the home of a missing father. However, there are no signs of where the crime was committed.