Tuesday

When a beautiful young teacher was found shot to death in a Wisconsin farm field, police quickly arrested her live-in boyfriend who had waited 18 hours to report her missing. But his Fitbit device proved he was asleep at home the night of the murder and a stranger Nicole met at a heavy metal concert in a local bar became a prime suspect.

Some cases simply can’t be solved with current technology or with the evidence at hand. But that doesn’t mean they’ll remain unsolved forever. Over time, a witness may be ready to talk, a new dna technique might offer more precision, an overlooked clue might be discovered. Forensic scientists reevaluate unsolved crimes and apply new methods to solving them.

Formed in the 1830s to protect settlers against indian attack, the rangers became part of the texas highway patrol in 1935. Their role has continued to evolve to keep up with changing times; today it includes sophisticated forensics labs.

Drug trafficking has spawned a violent and deadly criminal underground. It’s providing a challenge to forensic investigators devoted to cracking drug rings.

An 18-year-old college student vanishes during a holiday jog in a quiet Washington town. Days later, her body is found in a river, leaving a community shaken. For nearly three decades, the case runs cold—until a chance conversation and a discarded cup reveal a shocking truth.

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?

Police encounter people using odd methods of transportation.

On the edge of the Rocky Mountains, near the small town of Gunnison, Colorado, Jake Millison has gone missing. His family isn’t too concerned with his whereabouts, claiming he’s run off before, but Jake’s loyal friends know better

In 1996, nurses and patients at the VeteranÕs Affairs Medical Center in Northampton grow concerned. It seems that wherever nurse Kristen Gilbert goes, death follows. After several patients experience inexplicable heart attacks, law enforcement begins to investigate. During the investigation, a bomb threat is received - a threat investigators link to Gilbert. Gilbert is sentenced to 15 months in jail, time investigators use to gather evidence. Despite more than forty suspicious deaths when Gilbert is on the ward, she is convicted of 3 counts of first-degree murder. In 1998 Gilbert is sentenced to life in prison

Some of the best clues come from the least likely places. Baffling crimes have been solved and criminals betrayed through evidence provided by insects, beer bottles, and other seemingly meaningless objects.

In the 1980s the drug trade ravaged Chicago’s inner city neighborhoods. Heroin and cocaine sales soared. Violent crime threatened to destroy the community.

Young pregnant couple Elizabeth and Tony are viciously attacked in their home, just hours after evicting three down-on-their-luck men who had been staying with them. Is it a home invasion motivated by revenge, or something even more sinister?

A mother comes face to face with her worst nightmare when she finds her son under six-feet of water. But when the clues don’t add up, Dr. G is forced to consider a horrific scenario. Then… a train engineer panics when he spots a man lying on the tracks. Now it’s up to Dr. G to piece together how, and why, this man died.

Kay Baker, a school teacher and mom, was found lying in her neighbor’s yard bleeding to death. Soon after discovering her body, police spotted a wounded man on the run in the woods, leading to a suspenseful chase, arrest, and a possible suspect.   

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. There are no witnesses. Quick-thinking cops experiment with the sound in the boiler room by yelling with the door closed. Outside, total silence. Whoever killed andrea knew no one would hear him.

Investigators uncover a bizarre web of lies involving a conman posing as a doctor, Lisa Henning obsessed with reptilian conspiracies—leading to one of New Mexico's strangest and most chilling murder cases.

When an affluent couple is brutally murdered a seemingly random home invasion unravels into a sinister plot of greed, deception, with Kara Lounsbury shockingly close to the family circle.

When Jaime Ivancic suddenly disappears, her family spend months searching for answers. Detectives eventually uncover a horrifying chain of events that leads to Shelby Nealy, exposing the murder of Jaime and the subsequent killings of her parents and brother in one of Florida’s most shocking family murder cases.

A family man goes missing in a small West Virginian town known for its sweet mountain air. While his household searches the man’s regular haunts, police get involved -- and when he’s discovered, so are the abominations committed to his corpse. It seems there’s a monster on the loose. As authorities uncover the terrible facts, a community must stand together to protect their own.

Police Officer, Brian Fanion, frantically called 911 for an ambulance, saying his wife Amy had shot herself and lay dying. But when Fanion’s fellow officers arrived at the house, the crime scene posed more questions than answers.  

Us coastguardsman ricky dale hemphill and companion charla toma set out for a picnic along a river near brookings, oregon in the fall of 1979. A day later ricky is found murdered and charla is missing. A tip from a local hunter leads police to edward delen warren, a former convict in the area trying to set up a religious retreat. What police uncover is a bizarre plot that will soon spiral out of control.

A mother and child are kidnapped… a bystander is murdered. Violence such as this shattered a quiet Texas neighborhood and exposed a drug cartel that flourished where it was least expected.

A maternal senior psychiatric nurse that fired a junior nurse and heroin addict causes a two-day hostage situation that resulted in the death of a person.

Although family is supposed to mean everything to those who live in the mountains of Townsend, Tennessee, a member of the large Griffin clan is discovered dead.

In 1979, 18-year-old Michelle Martinko was found brutally stabbed to death in her car in the parking lot of a shopping mall in Cedar Rapids, Iowa. For decades, the police and her family searched for answers -- who did this and why? But the case grew cold. Thirty-nine years later, DNA evidence from the crime scene finally led to a suspect and a murder trial.