Tuesday

Lives changed in the 20 years following an unsolved murder, and so did forensic science. In time, a high-powered microscope and DNA profiling revealed not only a clue no one had seen before… but also the identity of the killer.

The parents of 11 yr. old Brittany Martinez knew their daughter was no runaway. Something had happened to her, something terrible. When they failed to find Brittany in their quiet Illinois neighborhood, they called the police.

A daring kidnapping and a bizarre ransom note baffled Mississippi authorities. The victim was the wife of a wealthy businessman. A list of 12 names and a few drops of blood were the only clues to her fate.

Poisoners are the most devious of killers, relying on stealth or their victim’s trust in order to steal their lives. They’re the most dangerous creatures in the world: Smart assassins. And they usually don’t stop at one kill.

Kay Baker, a school teacher and mom, was found lying in her neighbor’s yard bleeding to death. Soon after discovering her body, police spotted a wounded man on the run in the woods, leading to a suspenseful chase, arrest, and a possible suspect.   

Tourists get a little too rowdy and their beach walks turn into perp walks.

A Maine father of four is found shot to death after going out for a beer. Is he the victim of a family squabble? Did he run afoul of local crooks? Years later, an unrelated cold case and a guilty conscience help bring the killer to justice.

In 1996, two women are murdered in the same Texas apartment complex. Authorities follow every lead, but the case goes cold. Three years later, DNA evidence and a seemingly unrelated crime lead authorities to the sadistic "Bathtub Killer."

In 1995, the body of a Chicago woman is found dumped on a Wisconsin highway. Was she the victim of a lover’s spat turned deadly? Did she run afoul of local criminals? Investigators uncover the shocking truth behind the victim's tragic end.

Between1993 and 1996, the rape and murder of three Arkansas women puts local detectives on the trail of a sadistic killer. In their hunt for the truth, investigators learn that nothing in these cases is cut and dry.

Known as the Vampire Rapist for his distinctive modus operandi, Wayne Boden would rape, strangle and bite the breasts of his victims. It was a bite mark that he left on his Calgary victim that proved he was the person responsible for these crimes. Superior evidence gathering and the help of a local orthodontist would work to ensure his conviction for his Calgary crime, and force him to plead guilty to three similar cases in Montreal.

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.

The parents of 11 yr. old Brittany Martinez knew their daughter was no runaway. Something had happened to her, something terrible. When they failed to find Brittany in their quiet Illinois neighborhood, they called the police.

A daring kidnapping and a bizarre ransom note baffled Mississippi authorities. The victim was the wife of a wealthy businessman. A list of 12 names and a few drops of blood were the only clues to her fate.

When an 18-year-old girl falls in love with a man nearly 15 years her senior, her parents warn against it, but no one could predict the danger she is in.