Thursday

When a paramilitary faction used bombs and robbery to further their cause, they crossed the line. The well-organized terror cell was difficult to define, and even harder to stop.

In 1992, a woman disappeared from her Memphis home. When the ransom went uncollected, the FBI suspected a desperate amateur and feared the worst.

In 1979, 18-year-old Michelle Martinko was found brutally stabbed to death in her car in the parking lot of a shopping mall in Cedar Rapids, Iowa. For decades, the police and her family searched for answers -- who did this and why? But the case grew cold. Thirty-nine years later, DNA evidence from the crime scene finally led to a suspect and a murder trial.

Texas officers respond to what looks like a murder-suicide between a mother and her teenage son. Forensic testing of gunshot residue, body temperatures, and toxicology will decide whether this was a family tragedy or a staged scene.

Nicole Vonlee Titlow needed money desperately, so she made a deal with the wife of a 74-year-old millionaire, with eyes on the inheritance.

Over the years, Betty Lou Beets had multiple failed marriages, each of which ended in its own unique way. In 1983, she reported her fifth husband missing and tried to stage a boat accident.

She appeared on the highway in the spring, a young woman, her life cut short, her past and her identity a mystery. Only by finding out who she was could we ever hope to find her killer.

A motel housekeeper in Oakley, Kansas, discovers the body of her co- worker, Alice Pepperl. The room lacks hard evidence to point to any one suspect, but a special coin taken from the cash registered could be all it takes. Even after a suspect confesses, the question of responsibility looms over the town.

Housewife Elsie Jennes is found dead in the basement of her burning home. Lt Joe Kenda has no leads until Elsie’s son, William, turns up in a police station over 50 miles away, equipped with a suitcase, a pet golden retriever, and a bizarre story to tell.

In november 1986, a snowstorm rips through connecticut, leaving wife and mother helle crafts missing. Her husband, airline pilot richard crafts, evades suspicion for weeks by claiming that helle had left the country to visit her sick mother. Groundbreaking forensic work and an eyewitness to a gruesome scene involving an industrial-sized woodchipper, results in a conviction that shocks a community.

Soon after Mardi Gras in Mobile, Alabama, an 18-year-old freshman is found shot to death in the woods behind campus. Detectives take a hard look at several suspects, but thirty years go by before a stunning confession cracks the case.