A coalition of state, federal and the FBI police agencies join forces to to solve a case.
Police discover a murdered teenage girl was involved in a love triangle.
Police in Abbotsford, B.C. hunt a stalker who has left one teen dead and another barely alive.
A killer who leaves messages signed "Jack" terrorizes East Point, Ga.
Police try to track down the killer of two elderly women.
Phoenix police face a unique serial killer team that is stalking and killing innocent people.
A Texas playboy is murdered and police uncover x-rated photos, shocking videos and an object hidden inside the victim's body.
Sixteen years after a college student is found raped and strangled on a buffalo bike path, DNA technology and other clues help catch the killer.
When the prime subject for four factory deaths has a perfect alibi, investigators use video analysis, timeline reconstruction and a 3-year old fingerprint to solve the crime.
A phantom white supremacist sect takes credits for bombings and bank robberies in Spokane, Wash., but FBI forensic photo analysts clears the picture.
Police must use forensic science to solve the mystery of a prominent businessman whose burnt body is discovered.
Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.
Knowledge of insects by a forensic entomologist leads police to the killer of a wife and mother of two.
Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.
Investigators work to solve a double homicide in the small town of Hudson, Wisc.
A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.
A small town encounters satanic rituals and a savage killer.
Top criminal investigators, forensic scientists and behavioral analysts track three serial killers.
A serial rapist stalks elderly women for nearly 20 years before escalating to murder.
A sniper targeting abortion doctors turns murderous and a DNA "needle in a haystack" identifies the gunman.
Police investigate bombings at the 1996 Olympic Games in Atlanta, an abortion clinic and gay bar.
Police search for the killer of and elderly upscale Toronto couple.
When an unidentified burned corpse is found in a field, state-of-the-art forensics is turned to.
A search mission for three women missing in Yosemite Park turns to a murder investigation when two are discovered in the trunk of their burned out car.
The largest police investigation of the decade lasted 23 days to catch a sniper who terrorized Washington, D. C. residents.
A nurse is the main suspect of five bodies found in a wooded area in central Florida.
Investigators are drawn into the dark world of high-end prostitution, illegal aliens and Russian organized crime.
Ontario police conduct a manhunt for the prime suspects in four brutal murders.
An abandoned suitcase containing a young woman's body, leads to a mystery of a second woman missing too.
The murder of a gay couple in rural California leads investigators into the world of hate crimes.
A private school owner is kidnapped.
Explosive experts sifting through bomb evidence discover a more insidious plan.
The disappearance of millionaire Frank Black.
CSIs determine that a girl's ex-husband had his parents assassinate her.
After a young woman goes missing, detectives determine that her ex-husband had her killed and his parents were the assassins.
In 1990, Gainesville, Fla., becomes the site of a number of coed murders.
In 1988, motorists discover human body parts dumped along the highway.
Forensics shows the real killer in the murder of a socialite on Valentine's Day 2001.
Investigators probe disasters, natural and man-made, to determine what happened and how to prevent them in the future.
Millionaire Frank Black mysteriously disappears.
Using technology to solve crime.
Killers attempt to use the elements to cover their crimes.
Murder weapons often hold several critical forensic clues about the crime.
Criminals are betrayed by the clues their own bodies leave behind.
Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.
From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.