In 1992, Laura Houghteling disappeared from her Bethesda home and was never seen again. Laura's bedroom was searched and forensic science was used to direct them a to prime suspect.
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In 2002, a small community in upstate New York was devastated when Patty Wlasiuk died in a truck accident. But burdock seed pods found in her hair and on her clothes indicated that this was no accident - it was cold-blooded murder.
The wife of a murdered horse rancher explains that the last time she saw her husband was when he was leaving the house to go jogging. Police become suspicious when forensic evidence eventually leads investigators back to the ranch.
When a college co-ed vanished without a trace, her fellow students were concerned about her safety and their own.
After a Philadelphia convention, 180 legionnaires contract pneumonia-like symptoms and 29 of them die.
In the case of the Center City Rapist and the murder of Shannon Schieber, Philadelphia authorities use an anonymous letter and geographic profiling to hone in on a suspect.
Scott Dunn was missing and when the police sprayed his bedroom with Luminol, a scene of horrific violence emerged. Now investigators faced a daunting task.
The body of a college co-ed was found on a farm covered with her own denim as well as the jeans of the killer.
Timothy Wilson Spencer was identified as the man who raped and strangled five young women in Virginia. With the use of DNA profiling, an innocent man is freed and the real killer is convicted.
A fan of murder mysteries and forensic science shows uses what she learned from TV to determine who was responsible for the accident which permanently injured her 4-year-old daughter.
A young woman suddenly becomes critically ill, eventually leaving her unable to walk. A bone marrow test reveals the cause: arsenic poisoning. Investigators must determine if the poisoning was caused by groundwater contamination or something more sinister.
In 1992, Laura Houghteling disappeared from her Bethesda home and was never seen again. Laura's bedroom was searched and forensic science was used to direct them a to prime suspect.
A woman who was known to have suffered from depression took her own life. But her sister told police that she said if anything were to happen to her there would be a note in the china cabinet.
In 2003, St. Cloud teenager Jason MacLennan returned home after a night out with friends and discovered his father Ken's body lying in a pool of blood.
A 19-year-old woman was found dead in her car, the scene had been staged to make murder appear to be suicide. During their investigation, police discovered the victim was involved in a love quadrangle, giving several people a motive to kill her.
A girl claimed she had been abducted. She recounted what happened but things didn't add up to police.
Emergency dispatch received a call from a man who said his girlfriend shot and killed herself. The autopsy revealed that the gunshot wound was not self-inflicted and the evidence on her body would give police a golden opportunity to catch her killer.
When a young woman disappeared, police feared she was the latest victim in a string of similar crimes.
The body of a young girl was discovered on isolated farmland near Delano, California. She had no ID, but police found mailbox keys in the pocket of her jeans.
In 1991, a high school girl vanished after attending a party. The prime suspect had two alibi witnesses for the night she disappeared. A solid alibi can often overcome circumstantial evidence, but forensic evidence is another matter.
In 1994, Shannon Melendi disappeared while at Emory University. Her disappearance remained a mystery for ten years, until new scientific testing cast a different light on Colvin "Butch" Hinton.
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