When Chris Ochoa confessed to the 1988 rape and murder of Nancy DePriest, the case was closed. 8 years later, Achim Marino confessed to the same crime. Can DNA evidence identify the real perpetrator?
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When police discovered the body of Douglas Beamish's estranged wife, authorities linked 20 cat hairs found on her jacket to a cat owned by Beamish's parents. It was the first time animal DNA was used to solve a criminal case.
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 1988, the body of a young woman was discovered in an Ohio river. Most of the evidence had been washed away, but the victim's 6-year-old son unwittingly told investigators all they needed to know - without saying a word. The clue was in his genes.
When two boys are brutally attacked, investigators rely on evidence fished out of a nearby pond. It became the first case where diatom analysis was used to place a suspect at the scene of the crime.
When Chris Ochoa confessed to the 1988 rape and murder of Nancy DePriest, the case was closed. 8 years later, Achim Marino confessed to the same crime. Can DNA evidence identify the real perpetrator?
Exploring how an American hit single from 1966 -- "The Cheater" by Bob Kuban and the In-Men -- foreshadowed the demise of the group's lead singer, Walter Scott.
Lisa Manderach and her daughter Devon left their Pennsylvania home to go shopping but didn't return home.
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.
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.
In 1991, Maine resident Pearl Smith is missing after an argument with her husband Bill Bruns. But when an investigation turns up a blood trail that leads to the couple's basement, police are sure they'll find the victim's body.
A woman was reported missing after a fight with her husband. Police were suspicious of a suspect who reported a fire in his car. Two tiny drops of blood were found in the interior. A tiny clue inside the suspect's watchband helped solve the case.
Police investigate a missing college girl and discover her double life: attending school by day and working as a call-girl by night. Her body is found and investigators find her killer.
When a convenience store employee is found dead, police find the murder has been caught on a security camera.
A child was killed in a hit-and-run. The prosecutor has an accident reconstruction expert come to trial.
When a surgeon is found dead in his home, police assume it was suicide. The investigation reveals otherwise.
In this international case of extortion, murder and stolen identities, scam-artist Albert J. Walker assumes the identity of co-worker Ronald Platt.
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