Thursday

After an aspiring model's body is found dismembered in a lake, it takes over a year to find DNA evidence relating back to a dog owned by her abusive husbands’ parents, shifting the investigation closer than anyone could have ever imagined.

The day began like most others in the Johnson household, and Clayton Johnson left for work at the usual time. Within hours, his wife, Janice, was dead and the lives of Clayton and his family would be forever changed. Police in Nova Scotia had to unravel the circumstances surrounding Janice’s death and answer the question: Was it an accident... or murder?

In 1996, more than a dozen children in Seattle, Washington, were fighting for their lives. Each one of them had contracted a serious illness, and no one knew what it was. When one of the children died, investigators knew the clock was ticking... and they needed to isolate the cause and find the cure before time ran out.

On a September night in 1966, Dianne Keidel met a friend for a drink, and afterwards, she disappeared. Investigators were unable to determine if Dianne was the victim of foul play, or if she couldn’t face the responsibilities of being a single mother with four young children. That question was answered twenty-seven years later, when her daughter came forward with a fantastic tale of something she remembered seeing when she was only five-years-old.

The year was 1993, and young Navajos on a reservation in the southwest were dying at an alarming rate. CDC officials had never seen anything like it, and the mysterious illness had claimed the lives of more than 20 people. The tribe’s medicine men provided investigators with a critical clue... which would lead halfway around the world to a most unlikely killer.

Handwriting analysis: We’ve all heard that our handwriting tells more about our personalities than we think. Are we risk-takers, have low-esteem, fun loving, or are we capable of murder? While our handwriting may not reveal the nuances of our personalities, the dotting of the "i's and crossing of the "t"s is an important business in criminal investigation. Apparent suicide notes, letters from suspected offenders and signatures are scrutinized down to the last dot. Handwriting comparisons can tell if the victim really did sign that new life insurance policy, or if the person who had everything to live for actually wrote the eloquent suicide note.

Black boxes: Little evidence is left after an airplane takes a deadly plunge from the sky. Investigators' best hope for an answer comes from the flight data recorder known as a "black box." Virtually indestructible, the black box could be the only witness to the final horrifying moments of a doomed flight.

Forensics in the o.J. Simpson murder trial: Millions watched on television as the jury rendered their verdict. Orenthal james simpson was found not guilty of murder. The jury heard hundreds of hours of testimony and every twist and turn of the trial was played out in the media, but what was the evidence? Forensic scientists reconstructed the events that took place on the night nicole brown simpson was murdered. But was their report accurate, and could the evidence be trusted? We'll examine what forensics could and could not tell us about the trial of the century.

When the body of former policewoman Taylor Wright was discovered buried on a remote Pensacola farm, detectives had a lineup of suspects to investigate - her ex- husband from whom Taylor stole $100,000, her new live-in girlfriend Casandra, or her best friend Ashley. A locked cell phone held the clues.

Shayna Hubers called 911 to report she had killed her boyfriend in self-defense after he attacked her. But investigators soon learned he was planning a date with a beauty queen the night he died. Did Shayna kill him in a jealous rage? A stunning interrogation room confession and emotional testimony left the jury with a tough decision.

When Timothy Moore disappears from his home in South Bend, Washington, residents realize that they do not know there neighbors as well as they thought.

During the summer of 2003, 66-year-old Sharron Erickson is found raped and murdered on the floor of her garage in the small town of Colon, Nebraska.

When police discover Billy Triplett and his wife dead, town residents suspect it has to do with his unlawful liquor business dealings.

Diana Algar and Jose Molina are discovered brutally murdered in a trailer at the Paradise Camp Resort in Hollenback Township, Pennsylvania.

The peaceful town of Guffey, Colorado is shaken one January night when Carl Dutcher and his wife, JoAnna, are brutally murdered alongside their grandson.

Two hunters discover a blood-drenched car on a remote mountain road, its owner riddled with buckshot. When Lt. Joe Kenda learns the car was reported stolen the day before, he follows its trail to a group of unlikely suspects, and follows them down a dark path of deception, lust and revenge.

Eric Houston is found stabbed to death in a seedy motel, but the ensuing investigation is stymied by a long list of suspects. Lt. Joe Kenda refuses to let the case run cold, and deploys a groundbreaking new technology to catch the killer.

When a US postal worker named Kim receives a ride to the Orange County fair from a quiet co-worker, she has no idea that she will soon become their obsession.

Sarah begins dating a young pastor who she thinks is good looking, but she soon discovers he has a hidden life that will shock her and her family.