The Worst Episodes of Forensic Files

At the Dallas 'Pistol & Revolver' club in 1991, Trey Cooley, a young spectator, was watching a shooting competition, seated behind an air gun range. He was struck and killed by a stray bullet. See how ballistics, lasers, and forensic animation solve the riddle of the "magic bullet".

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Caren Campano disappeared and her husband, Chris became the prime suspect -- especially after police found a huge bloodstain on the Campano's bedroom carpet. When they sprayed the bedroom with Luminol, they discovered it was awash with blood spatter. Complex DNA testing - 'reverse paternity' tests - proved it was Caren's blood. Now all they had to do was find her body.

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The first case to use DNA evidence is detailed. In 1983 Leicester, England, police were stymied by a rape/murder of a 15-year-old girl; three years later, faced with a similar crime, they turned to Dr. Alec Jeffreys, a molecular biologist with a revolutionary approach to solving the case.

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Single mother Denise Johnson is found dead in a deserted area outside of Phoenix, Arizona. Local investigators ask a molecular geneticist to pick out a tree in a 'lineup' when unidentified seed pods are found in suspect Mark Bogan's truck. The judge rules into evidence DNA profiles linking the pods to a tree near where the body was found. This is the first U.S. case where plant DNA was used to convict a criminal.

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The U.S. criminal justice system's first use of DNA profiling in a serial murder case frees an innocent man after he spent two years in prison, and convicts the real killer. FBI psychological profiling and DNA evidence identify the man who raped and strangled five young women in Virginia.

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Legionnaires' disease is one of the most famous medical detective stories, especially irritating for its missteps and frustrations. When 180 Legionnaires contract pneumonia-like symptoms after a Philadelphia Convention and 29 of them die, doctors and scientists are mystified. The determination of one scientist helps to determine the cause and likely vector of this deadly disease.

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On the night of May 22, 1992, Betty Wilson returned home after a meeting. She walked up the stairs to the bedroom and discovered her husband, Eye doctor Jack Wilson, beaten and stabbed to death, lying in a pool of blood with a baseball bat nearby. Jack Wilson had obviously been murdered... but how? And by whom? Even the experts couldn’t agree.

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Troubling clusters of deadly cancer cases strike concerned communities across the country. In a Phoenix suburb, too many children are fatally stricken with leukemia and, on a Connecticut street, there is a disproportionate amount of illness, including four cases of brain cancer. Modern environmental agents such as buried poisons and electrical substations are found... Could these be the culprits?

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Between 1985 and 1988, 18 people were choked, molested and left for dead in the remote desert mountains of California. The only witnesses were the insects – and they also proved to play an important role in solving the crimes.

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Alarmingly high levels of thyroid hormones pump through the systems of South Dakota residents. Investigators study one family who all got sick, except their 12-year-old son who is a vegetarian.

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In 1971, John List left a note with the bodies of his mother, wife, and three children in his mansion ballroom, funeral organ music blaring from a central sound system, and disappeared. Eighteen years later, all detectives had to work from is an outdated photograph of List. In 1989, the popular television series America's Most Wanted commissioned an age-scaled bust of List to aid viewers in identifying the confessed murderer. Dr. Frank Bender, nationally-recognized artist and sculptor, worked with forensic psychologist Richard Walter to develop a profile of the aging List.

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Escherichia coli (E-coli) bacteria can be found in meats, milk and in water. When food is properly processed, prepared and stored, E-Coli are harmless. But in the absence of these simple precautions, E-Coli can have deadly consequences. Raw Terror tells the story of Damion Heersink, an eleven-year-old boy who almost died after eating an improperly cooked hamburger teeming with E-Coli, and the people who saved his life.

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A young woman was reported missing after a fight with her husband. She was presumed to be dead and her husband was the prime suspect. Police were suspicious of a secondary suspect when he reported a suspicious fire in his car. Two tiny drops of blood were found in the burned interior. Traditional DNA testing was difficult, since there was no body for DNA comparison. But a tiny clue inside the suspect's watchband and a popular television show helped solve the case.

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In 1991, Maine resident Pearl Smith is missing after an argument with her husband, Bill Bruns. Despite pleas from her children, police treat it as a routine missing person's case. But, when an investigation turns up a blood trail that leads to the couple's basement, police are certain they'll finally find the victim's body.

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In 1989, 4-year-old April Loveless was found dead in the backyard of her Texas home. Her mother Debbie Loveless and step-father John Miller told police that she was attacked and killed by neighborhood dogs, but the injuries on her body didn't match their account of what happened. Investigators believed April's wounds were slashing injuries, consistent with a knife wound. John and Debbie were found guilty of murder and sentenced to life in prison. Five years later, the parent's prayers were answered when a forensic scientist saw something in the crime scene photographs that had been missed the first time around.

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In 1995, police in San Diego, CA, are baffled by a pair of hands found in a dumpster. Through further investigation, they determine that the hands are those of missing person Don Hardin. With this knowledge, the police focus on local homeless man Dale Whitmer, whom had lived with Hardin around the time of his disappearance. However, they can find no solid, forensic evidence on Whitmer and the case goes cold. About a year later, investigators receive an anonymous letter with information about the crime that had been withheld from the press – information only the killer (or someone close to the killer) would know. Laser technology helps to identify the state, city, street address and even the office number from where the anonymous letter was mailed.

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In 1993, 16-year-old Marie Robards suffered the devastating loss of her father Steve Robards. The death was ruled the result of cardiac arrest. One year later, she won a part in her high school production of Shakespeare's Hamlet. The lines she was required to recite onstage were more than the thoughts and feelings of her character; they struck a chord, and hinted at her own inner turmoil, from the secret she had been hiding.

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In 1996, 17-month-old Josh Hinson died in a fire in his North Carolina home. A federal agency ruled that a fire was intentionally set and Josh's mother Terri Strickland was charged with murder. Using the then-emerging resources of the Internet, Terri Strickland undertook her own investigation. An independent fire investigator was able to poke enough holes in the government's scientific conclusions to raise serious questions about whether the fire was intentionally set.

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In 1988, when a patient, later identified as Gene Hanson, dies unexpectedly in the office of California neurologist Richard Boggs, police begin what they think will be a routine investigation. What they find throws doubt on the time of death, the identity of Hanson and raises questions about the doctor's role in his death. Soon they uncover a bizarre story of corpse stealing, fake identities and sexual perversion – all part of an elaborate insurance case that will center on what actually caused the victim's death: a sex act gone wrong or premeditated murder?

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In 1992, two masked gunmen enter the Canadian home of Ward and Diana Maracle to rob them, but Ward was shot in the head. If a perpetrator leaves a shoe print in the mud, investigators use established techniques to make a mold of the shoe impression for later identification. In this case, the impression is left in the snow. Here's the story of one investigator, whose quick thinking and knowledge of science enabled him to capture a shoe impression made in snow, before the evidence melted away.

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In 1992, 22-year-old Dawn Bruce was brutally raped and murdered in her Virginia apartment. The killer left very little evidence, but investigators did notice a blood smear on a pillow case that appeared to have been made by one of the killer's fingers. New technology enabled investigators to identify a fingerprint from the cloth surface of the pillow case.

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In 1981, six-year-old Cassie Hansen disappeared from her St. Paul, Minnesota church during a Sunday evening service. After a tip from a witness that an older man was seen carrying a small body, Cassie's body was found in a dumpster. The FBI created a psychological profile of the perpetrator, but are still unable to find the killer.

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In 1995, California model Linda Sobek goes missing. A park employee discovers photographs and some vital pieces of information in a dumpster, which eventually led investigators to professional photographer Charles Rathbun. Rathbun claims Sobek died during a consensual sexual encounter gone wrong, but Sobek's corpse and some high tech digital imagery tell a more sinister story.

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In 1998, an evening out at a Maryland murder mystery theatre performance turns into a real life whodunit when the badly burned body of Stephen Hricko is found in his hotel room after a fire. Upon initial investigation, it appeared to be an accidental fire. Lies, greed and medical trickery can't match the skills of forensic scientists, who pull the curtain down on the real killer.

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In 1980, Michigan resident Shannon Mohr died tragically in what was reported by her new husband, David Davis, as a horseback riding accident. Upon deeper investigation, police uncover a thread of lies in Davis' background after his suspicious behavior prompts a closer look.

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