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.

42min | Aired on Jul 29, 2003 | TV-14 V,D | CC

With access to the San Francisco Police Department's work, including saliva samples taken from letters the infamous Zodiac Killer sent 30 year ago, we reevaluate the case of the serial killer who began terrorizing California in the late 1960s.

44min | Aired on Aug 05, 2003 | TV-14 V | CC

Cops finally close in on a serial killer with the help of the Internet. 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.

43min | Aired on Aug 12, 2003 | TV-14 V | CC

A quarter of a century after the murders of two nurses, Canadian police suspect that a former Toronto cop committed the crimes. A blow to the head of a garbage collector in San Jose leaves strange markings.

43min | Aired on Aug 19, 2003 | TV-14 V | CC

In the 1980s, a serial killer prowled the posh streets of Orange County. Police were unaware of the serial attacks until 1996, when DNA revealed the killer's secret and they linked four murders to a single DNA profile.

42min | Aired on Sep 02, 2003 | TV-14 V,L,D | CC

A thumbprint connects two separate murders and it is later discovered that the suspect had a strange fetish for women's lingerie. Then, an elderly woman is found murdered in her bed and the only evidence is a single strand of hair.

43min | Aired on Oct 14, 2003 | TV-14 V | CC

A mother is suspected in the murders of two of her daughters, when her third daughter finally convinces police to reopen two cold cases.

42min | Aired on Oct 28, 2003 | TV-14 V | CC

After 46 years, LA homicide detectives take a Lover's Lane bandit who also gunned down two police officers into custody. Then, DNA testing helps lead police in Florida to a suspected killer, however the killer has an identical twin.

42min | Aired on Jan 01, 2001 | TV-14 V | CC

A murderer's saliva, found on envelopes, helps seal his doom 37 years after his first killing. And Colorado police crack a cold case 24 years later when they take a DNA sample from the victim's son that proves that his father murdered his mother.

44min | Aired on Nov 25, 2003 | TV-14 V | CC

While hiking with husband Dennis in Montana, Leslee Larson fell into Wolf Creek. Then Dennis is convicted of murdering his wife, while in Main. And 15-year-old papergirl Penny Parker goes missing, then her body is found by a search volunteer.

44min | Aired on Dec 09, 2003 | TV-14 V,D | CC

An undercover agent solves a 15-year-old crime.

44min | Aired on Jan 22, 2001 | TV-14 V | CC

A detective works for 15 years to nab a man who murdered his wife and dismembered her body to hide the sexual abuse of his children. Then, 20 years after the shooting murder of a gas station attendant, detectives get a lead.

51min | Aired on Dec 30, 2003 | TV-14 V | CC

Cold Case discusses the story of the nearly 20-year hunt for the man responsible for the murders of 49 prostitutes and other women in the Seattle, Washington area.

44min | Aired on Feb 03, 2004 | TV-14 V | CC

The murder of a 73-year-old man leads police on a long chase for a man who's suspected of identity theft and bears a rose tattoo with the name Phyllis.

43min | Aired on Feb 10, 2004 | TV-14 V | CC

Police must wait nearly 30 years before advances in DNA technology give them the chance to convict the killer of a young hitchhiker, and Philadelphia police wage a 16-year hunt for the man who raped and killed a 10-year-old girl.

43min | Aired on Mar 09, 2004 | TV-14 V | CC

Detectives from three different departments in Westchester County, NY team up to track down a serial killer; and a man known as the Bus Stop Rapist becomes the lead suspect decades after a woman is found murdered under a hotel bed in the case.

45min | Aired on Mar 23, 2004 | TV-14 | CC

Police crack a cold case of murder when a mysterious woman calls to say that her boyfriend is the killer; and the murder of a woman in 1998 provides clues to the 1988 murder of actress Myra Davis, a stand-in for Janet Leigh in the movie Psycho.

44min | Aired on Apr 13, 2004 | TV-14 V | CC

A Texas woman's murder is solved when the killer's plan to murder another woman and stuff her into a duffel bag goes awry; and a reporter doing a story on unsolved homicides helps crack a case of murder that had been ruled an accidental death.

45min | Aired on May 04, 2004 | TV-14 V | CC

Testimony about the growth of larvae in dead bodies helps convict the man who stabbed a couple to death and strangled their 4-year-old daughter in 1993. And the 2001 murder of a young girl, whose head was cut off, remains unsolved.

45min | Aired on May 08, 2004 | TV-14 V | CC

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.

44min | Aired on May 29, 2004 | TV-14 V | CC

A prostitute who fights off a screwdriver-wielding man helps police track down a serial killer; and undercover agents acting as mobsters conduct an elaborate sting to solve a murder case that had gone cold for years. Then, detectives from three different police departments in Westchester County, New York team up to track down a serial killer.

44min | Aired on Jun 08, 2004 | TV-14 V | CC

A woman, who takes down the license plate number of a car following, helps investigators solve the murder of another woman; and a call from a mother accusing a man of molestation gives police a lead from a 30-year-old murder of an Atlanta policeman.

The testimony of three prison inmates helps convict a man who viciously killed a woman out for a bike ride nearly two decades prior; and a self-admitted sex addict who strangled his cat is a suspect in the 30-year-old murder of a neighbor.

43min | Aired on Jun 22, 2004 | TV-14 V | CC

DNA technology that take place over 20 years help police to finally identify the man who brutally stabbed two women to death; and an anonymous caller leads police to the killer of a 13-year-old girl who was shot dead and left in the woods.

1h 28min | Aired on Jul 06, 2004 | TV-14 V | CC