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The investigation into the 2006 murder of Omaha-based actress Pasinetta Prince is recounted. The case took several twists and turns until 2009, when a suspect was arrested. (Repeat).

The Kathryn Horn case is detailed. The Traverse City, Mich., teenager went missing in 1994. The initial investigation led the police an underworld of hippies, witches and cults, but a break didn't come their way for 20 months, when a mushroom hunter discovered Horn's body in the woods. (Repeat).

The murder of a woman in the living room of her Nashville home is investigated. (Repeat).

The disappearance of an 18-year-old freshman from the University of South Alabama is investigated. (Repeat).

The disappearance of an Air Force staff sergeant in San Angelo, Texas, causes the community to rally around his new bride, but investigators soon realize that there is something sinister going on. (Repeat).

The murder of a former homecoming queen in Rock Hill, S.C., is examined. (Repeat).

A pregnant woman's murder is investigated. The police find an unlikely source of information for the case: an HBO movie. (Repeat).

A murder in Peoria, Ill., is investigated. An obscure clue leads to the killer. (Repeat).

The murder of a businessman leaves the investigators stumped; the prime suspect's alibi is questioned. (Repeat).

A union official is executed in his home not long after a strike by the union membership. Neither his wife, who was sleeping in the adjacent bedroom, nor anyone in the neighborhood, heard any gunshots. It would take a forensic sound test, an electron microscope, and a nightgown to explain why. [also marked as S8:E3] (Repeat).

A man tells police he shot an intruder who attacked and murdered his wife. The husband paints a tragic picture of harassment, stalking and revenge, and is dubbed a hero for his valiant attempt to save his wife. Four years later, new forensic evidence leads police to re-examine the motives of this so-called hero. [also marked as S8:E6] (Repeat).

An alleged suicide is investigated. A police officer claims his estranged wife shot herself after they argued. Investigators rely on a ballistics report and other forensic evidence to verify or disprove the husband's story. (Repeat).

The investigation into an apparent murder-suicide leads the police to a different conclusion and to a suspect: a high-school track coach. (Repeat).

The brutal slayings of a young couple are investigated. Shell casings, paint chips and glass shards lead the police to suspect a white supremacist. (Repeat).

With no forensic evidence inside a murder scene, investigators were baffled. But they suspected that the victim's dog, had witnessed the crime. If she had, forensic scientists would've had some way to find out, what the dog had seen. (Repeat).

A young TV news producer is raped and murdered in her apartment. Police identify two suspects, but both are cleared of any wrongdoing. The case stalls for more than a year, and then investigators turn to Virginia's DNA Databank which houses profiles of more than 8,000 convicted felons, and is the first of its kind in the nation. Comparing the crime scene evidence with the Databank profiles results

The police investigate the shooting of a homicide detective's wife; the officer claims his wife shot herself by accident. (Repeat).

For years, a woman suffered from what appeared to be the unpleasant side effects of lithium, a drug prescribed to treat bipolar disorder. Her search for help led her to numerous doctors and hospitals, and resulted in a 4000-page medical file. When she died, investigators had to determine if her death was due to natural causes, suicide, or murder. (Repeat).

A pregnant woman's murder is investigated. The police find an unlikely source of information for the case: an HBO movie. (Repeat).

A murder in Peoria, Ill., is investigated. An obscure clue leads to the killer. (Repeat).

The murder of a businessman leaves the investigators stumped; the prime suspect's alibi is questioned. (Repeat).

A union official is executed in his home not long after a strike by the union membership. Neither his wife, who was sleeping in the adjacent bedroom, nor anyone in the neighborhood, heard any gunshots. It would take a forensic sound test, an electron microscope, and a nightgown to explain why. [also marked as S8:E3] (Repeat).

A man tells police he shot an intruder who attacked and murdered his wife. The husband paints a tragic picture of harassment, stalking and revenge, and is dubbed a hero for his valiant attempt to save his wife. Four years later, new forensic evidence leads police to re-examine the motives of this so-called hero. [also marked as S8:E6] (Repeat).

An alleged suicide is investigated. A police officer claims his estranged wife shot herself after they argued. Investigators rely on a ballistics report and other forensic evidence to verify or disprove the husband's story. (Repeat).

The investigation into an apparent murder-suicide leads the police to a different conclusion and to a suspect: a high-school track coach. (Repeat).

The brutal slayings of a young couple are investigated. Shell casings, paint chips and glass shards lead the police to suspect a white supremacist. (Repeat).

With no forensic evidence inside a murder scene, investigators were baffled. But they suspected that the victim's dog, had witnessed the crime. If she had, forensic scientists would've had some way to find out, what the dog had seen. (Repeat).

A young TV news producer is raped and murdered in her apartment. Police identify two suspects, but both are cleared of any wrongdoing. The case stalls for more than a year, and then investigators turn to Virginia's DNA Databank which houses profiles of more than 8,000 convicted felons, and is the first of its kind in the nation. Comparing the crime scene evidence with the Databank profiles results

The police investigate the shooting of a homicide detective's wife; the officer claims his wife shot herself by accident. (Repeat).

For years, a woman suffered from what appeared to be the unpleasant side effects of lithium, a drug prescribed to treat bipolar disorder. Her search for help led her to numerous doctors and hospitals, and resulted in a 4000-page medical file. When she died, investigators had to determine if her death was due to natural causes, suicide, or murder. (Repeat).

A surveillance video might shed some light on to what happened in an apparel store in Bethesda before it was turned into a bloody scene. (Repeat).

The 20-year-old clerk of an Atlanta-area smoke shop is gunned down during a robbery, but investigators have only descriptions of the killers and the make of their getaway car. Investigators use a videotaped confession to smoke out the killers. (Repeat).

Get the latest news, weather updates, and sports analysis on CNN News Central. Stay informed with all the top stories of the day. (Repeat).

Get the latest news, weather updates, and sports analysis on CNN News Central. Stay informed with all the top stories of the day. (Repeat).

Get the latest news, weather updates, and sports analysis on CNN News Central. Stay informed with all the top stories of the day. (Repeat).

Over three days, five college students are brutally murdered in Gainesville, Florida. As investigators search for the serial killer, panic fills the usually sunny city. (Repeat).

Five college students are found brutally murdered in Gainesville, Florida. However, it takes investigators months – and the discovery of a campsite, a screwdriver and an audiotape - before they can identify who the serial killer was. (Repeat).

On June 5th, 2002, Elizabeth Smart is kidnapped from her Salt Lake City home, snatched from her bed at knifepoint by a mysterious man in the middle of the night. To the public it seemed as if she had vanished into thin air, but she was actually taken by Brian David Mitchell, a 48-year-old pedophile. A look at the unbelievable nine month saga with its unforeseeable twists and turns, a police invest

For nine months, in 2002, 14-year-old Elizabeth Smart is the most famous missing child in America. Kidnapped by Brian David Mitchell, she was forced up into a hiding spot in the mountains behind her home, assaulted and forced to be his second "wife." Following the harrowing of her nine month ordeal, including the multiple trips they took to Salt Lake City where she was hidden in plain sight. And t

In October 1994, Susan Smith reported that she had been carjacked and her two young sons abducted. (Repeat).

In a rare interview, David Smith, the father of the missing boys, shares his side of the story. (Repeat).

Behind the scenes of Selena's red hot career, ambitions, and tragic demise. Rare interviews include her close friend and co-fashion designer, the back-up singer in her band, and a nurse who spoke to Selena and her killer just before she died. (Repeat).

Police officers in Bolingbrook, Illinois go on an intense search to find Stacy Peterson. (Repeat).

A woman is found dead in a ravine near a jogging path. Crucial crime scene evidence had been washed away by severe thunderstorms. Twice, the trail turned cold. Then, almost 20 years later, an old hat and a chip of stainless steel no longer than a fingernail brought the killer to justice. (Repeat).

The investigation into the murder of an 11-year-old girl, who had been missing for 10 days, is recounted. (Repeat).

A sexual-abuse victim's death is investigated. (Repeat).

For six years, a serial killer prowled the streets of New York City. He wrote letters to police and The New York Post, indicating he would kill twelve people, one for each astrological sign. Forensic astronomy, handwriting analysis, and DNA extracted from the flap of an envelope gave investigators a profile of the killer, and a stroke of luck enabled them to find him. (Repeat).