A six-year-old girl witness the brutal murder of her grandmother before being assaulted herself, and her testimony results in the conviction of her uncle.
While investigating the death of a woman whose body was found a mile away from her abandoned car, police uncover evidence that leads back to one of their own.
A 16-year-old girl manages to survive when her parents are brutally murdered in their bedroom, and investigators suspect that there might be more to her story.
When investigators manage to locate a bag full of evidence caught in the branches of a tree, they deduce that the killer meant to throw it in the river.
Police think a killer has struck again when a woman's body is found but clues such as bloody gloves and tire tracks show them that it is entirely different.
Evidence concerning the case of a murdered 9-year-old girl leads investigators back to the man who placed the anonymous call divulging the location of the body.
A young woman's disappearance leads police to a suspect who has a history of sexual assault, rape and kidnapping. But police can't find the victim's body.
A wealthy, middle-aged woman dies suddenly at home; an autopsy finds no signs of foul play, but investigators are unable to determine the cause of death.
Elderly woman found murdered in her home and police retrieve fingerprints from crime scene but are unable to find match until after technological advancements.
A sniper attempts to evade the police by scratching off the serial number of the gun he used to kill a man but police are able to make the number reappear.
Seattle area terrorized by a serial arsonist that seems to have no rhyme or reason starting more than 100 fires and investigators use several techniques.
In the case of Troy Graves, a serial murderer strikes in two separated states, wreaking havoc and unleashing fear wherever the victim's bodies are found.
Woman appeals her conviction for the murder of her mother in a car fire and is released but an expert witness provides new information when she is retried.
A Native American couple comes in with symptoms of the flu that turn deadly as each die within days of each other, bringing the Center for Disease Control out.
Man threatens to sue hotel where his wife "accidentally" slipped and died but a police investigation and accident reconstruction reveals it was no accident.
A man rapes women for twenty years without ever leaving a clue for police to follow; however, geographical profiling holds promise at catching this rapist.
When a young girl is sexually assaulted and murdered, forensic scientists are able to find a key clue in the form of some unusual fibers found near the victim.
Law officials and forensic scientists attempt to ascertain the connection between three female college students who were murdered in a similar fashion.
A female naval officer is found murdered after threatening to expose the cycle of sexual harassment, assault and corruption within the military hierarchy.
Police initially suspect suicide when a woman's body is found under a bridge, but further investigation reveals that she was carried and thrown over the side.
A Delaware man who is suspected of killing his mother tries to convince detectives that an unidentified hitchhiker to whom he gave a ride committed the murder.
After eyewitnesses report the crime, law enforcement officials begin working fervently to locate a mother and child who were kidnapped during a carjacking.
Two new pieces of evidence in the form of a pair of running shoes and a cell phone breathe new life into a murder case that went unsolved for eight years.