Police run down more than 11,000 leads before coming up with a suspect in the murders of three Virginia girls; and the abduction and strangulation of a California woman continues to baffle investigators more than 11 years after the crime
With access to the SFPD's work, including saliva samples taken from letters the Zodiac Killer sent, we reevaluate the case of the serial killer who began terrorizing California in the late 1960s--one of the first to send clues to the media.
Cops close in on a serial killer with the help of the Internet and information supplied by a subsidiary of Microsoft. And a drug trafficker jumps bail, goes into the bike shop business, and helps pioneer the sport of mountain biking while he's on the lam.
Police suspect that a former cop committed the murder of two nurses. A blow to the head leaves strange markings, and decades later, forensic science matches the markings. Police hope that DNA will help track down the man who stabbed and killed a woman.
A mother is suspected in the murders of two of her daughters, when her third daughter finally convinces police to reopen two cold cases.
LA homicide detectives take a bandit who gunned down two police officers into custody. DNA testing helps lead police to a suspected killer who has an identical twin. Police suspect that a former cop committed the murders of two nurses.
A murderer's saliva helps seal his doom. Police crack a cold case when they take a DNA sample from the victim's son. An arson investigator is suspected of setting a series of fires. A man is convicted of raping and murdering his neighbor.
Detectives track down a man who murdered his wife after he's convicted of killing his third wife. A 15-year-old papergirl goes missing. A killer helps convict himself when he boasts to cellmates. Investigators probe the murder of a pregnant woman.
An undercover agent proves the wife of a Navy seaman had arranged a murder-for-hire. A man claimed his estranged wife committed suicide, but he is the prime suspect. Police solve a murder when divers find a skeleton. A dead dog's DNA helps crack a case.
A detective works for 15 years to nab a man who murdered and dismembered his wife. 20 years after the murder of a gas station attendant, detectives get a lead. A New Orleans police officer goes undercover on a riverboat to gain a confession.
The murder of a man leads police on a long chase for a man who's suspected of identity theft and bears a rose tattoo. Forensic toxicology solves the death of a woman 9 years later. A sheriff tries to get a mother to confess to killing her two babies.
Police crack a cold murder case when a mysterious woman calls and says her boyfriend is the killer; and the 1998 murder of a woman provides clues to the '88 murder of actress Myra Davis, Janet Leigh's stand-in in 'Psycho.'
Testimony about larvae growth helps convict the man who murdered a family. The murder of a young girl remains unsolved. A police officer goes undercover on a riverboat to gain a confession. A man goes on trial after the victim's body is found.
A cold case is solved when the killer's plan to kill another woman goes awry. A reporter helps crack a murder case previously ruled an accidental death. Police obtain DNA evidence from a cigarette butt; and a mother is convicted of killing her daughter.
After 23 years, investigators finally track down the killers of an Atlanta policeman when the ex-wife of one of the killers phones in a tip; and a mother keeps the skeletal remains of the 3-year-old daughter she killed in a footlocker.
Undercover agents conduct an elaborate sting to solve a murder case that had gone cold for years. Detectives from three different departments team up to track down a serial killer; and a man known as the "Bus Stop Rapist" becomes a suspect.
The testimony of three inmates helps convict a man who killed a woman two decades prior and a sex addict is a suspect in the 30-year-old murder of a neighbor. Cops close in on a serial killer with the help of the Internet and a drug trafficker jumps bail.