
Forensic Files
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.

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.

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.

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.

The murder of 9-year-old Jessica Knott is investigated. Investigators use a garbage bag to connect suspect James Edward Crow Jr. to the crime.

The murder of 9-year-old Jessica Knott is investigated. Investigators use a garbage bag to connect suspect James Edward Crow Jr. to the crime.

The murder of 9-year-old Jessica Knott is investigated. Investigators use a garbage bag to connect suspect James Edward Crow Jr. to the crime.

The murders of an elderly couple leave police stumped until, two years later, they receive a major break. A jeweler looking through old newspaper clippings recognizes a necklace the female victim wore as having been pawned in her own shop.

The murders of an elderly couple leave police stumped until, two years later, they receive a major break. A jeweler looking through old newspaper clippings recognizes a necklace the female victim wore as having been pawned in her own shop.

The murders of an elderly couple leave police stumped until, two years later, they receive a major break. A jeweler looking through old newspaper clippings recognizes a necklace the female victim wore as having been pawned in her own shop.

The apparent overdose suicide of Reverend Bill Guthrie's wife, Sharon, is investigated, and detectives recover incriminating files from Bill's computer and learn of his infidelity.

The disappearance of Philadelphia college athlete Aimee Willard is investigated after her car was found on the roadside. When her body is found, the police find unusual marks on her body and DNA evidence that eventually leads to her killer.

The disappearance of Philadelphia college athlete Aimee Willard is investigated after her car was found on the roadside. When her body is found, the police find unusual marks on her body and DNA evidence that eventually leads to her killer.

The 1996 Seattle murder of suburban couple Raquel Rivera and Jay Johnson is detailed. Evidence from the couple's dog, Chief, eventually ties one of the murderers to the scene. This is one of the first cases where dog DNA was used to convict.

The 1996 Seattle murder of suburban couple Raquel Rivera and Jay Johnson is detailed. Evidence from the couple's dog, Chief, eventually ties one of the murderers to the scene. This is one of the first cases where dog DNA was used to convict.

The 1996 Seattle murder of suburban couple Raquel Rivera and Jay Johnson is detailed. Evidence from the couple's dog, Chief, eventually ties one of the murderers to the scene. This is one of the first cases where dog DNA was used to convict.

A look back at the case of the "River Park Rapist," who assaulted four women in South Bend, Indiana, in 1996. Law enforcement officers arrested Richard Alexander, who was convicted in 1998 and sentenced to 70 years in prison.

A look back at the case of the "River Park Rapist," who assaulted four women in South Bend, Indiana, in 1996. Law enforcement officers arrested Richard Alexander, who was convicted in 1998 and sentenced to 70 years in prison.

Cat hairs found in evidence lead to the first testing of animal DNA to solve a crime.

Cat hairs found in evidence lead to the first testing of animal DNA to solve a crime.