After a day of fishing in a small, quiet village in Switzerland, a teenage boy did not return home as planned. The investigation revealed some important microscopic evidence in the water near where he was last seen.
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When a 62-year-old man opens a car restoration business and becomes seriously ill, his doctors cannot find the cause, but forensics can identification of a highly toxic metal in the victim's blood leads to his poisoner.
The 1987 disappearance of Houston resident Tracy Jo Shine is recalled. The investigation went cold until 2000 when a "cold case squad" learned that the woman's ex-boyfriend Michael Neal had bragged about killing her.
A woman disappeared along a California highway in 1991. Three years later, the case was solved when a man's refrigerated truck was looked upon with suspicion.
While investigating an apparent overdose suicide, detectives recover incriminating files from a computer.
The disappearance of Philadelphia college athlete Aimee Willard is investigated after her car is found on the roadside. When her body is found, the police find unusual marks and DNA evidence that eventually lead to her killer.
In the 1980s, a trio of unsolved murders occurred in Wichita Falls, Texas. Later, a fourth murder from the same time period provided the police with far more than they realized.
Soon after becoming pregnant by Dr. Maynard Muntzing, firefighter Michelle Baker's health quickly deteriorates. Eventually, she raises suspicions that Muntzing is doing her harm.
After the murder of Seattle residents, evidence from the couple's dog eventually ties a murderer to the scene.
In 1996, Indiana police identified Richard Alexander as the "River Park Rapist" who assaulted four women that year. Later, DNA analysis casts doubt on his conviction.
A coroner finds telltale clues on the badly burned body of a murder victim, sending police in pursuit of a couple of killers.
The police investigate when a severed leg is discovered among garbage. Conventional means of identifying the victim are impossible, leading investigators to rely on DNA, forensic anthropology and toxicology.
The investigation into the kidnapping and rape of an 18-year-old Ohio woman is aided when the victim returns hours after the incident occurred. With her help, the police are able to track the assailant to his front door.
In 1984, a passerby finds the torso of a woman in a cardboard box. A forensic entomologist analyzes nearby insect activity to determine when the victim was killed.
Two people witness a truck driving over an unconscious man and flee into a nearby bar, but when the police turn up, the truck, the man and the witnesses are gone.
Forensic computer analysis, blood spatter analysis and a painstaking investigation lead police to a lawyer husband Michael "Mick" Fletcher with a motive to kill his wife since he was having a sexual affair with judge Susan Chrzanowski.
When 19-year-old Lori Auker left her Pennsylvania home for work and never arrived, it took space-age technology, cat hairs and insects to pinpoint the image of the woman's abductor.
In 1995, when off-duty Maine State Trooper Vicky Gardner is attacked by Steven Fortin during a routine stop, it triggers a chain of events which jumpstarts a stalled murder case in New Jersey.
In 1981, New York correctional officer Donna Payant disappeared and was later found in a landfill. The medical examiner not only identified the cause of death but also found an important clue.
In 1991, San Francisco pornographer Artie Mitchell was murdered in his home. His brother and business partner Jim is found near the scene carrying a rifle and later confesses to shooting Artie. The question is whether the shooting was premeditated.
Susie Mowbray was charged for her husband Bill Mowbray's death, but her son was convinced of her innocence.
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