An investigation into the murder of Katie Poirier is stymied by the lack of a body. Finally, investigators use a single tooth found among some charred remains to identify her.
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A boy is mysteriously shot in his father's gun club. Ballistics, laser technology, scale models and animation reveal the bullet's amazing path and who was responsible.
When Kristine Fitzhugh failed to show up for her music class, her husband found her dead at the bottom of the stairs of their Palo Alto home. Further investigation reveals evidence of murder in the kitchen.
In 1988, the body of a young woman was discovered in an Ohio river. Most of the evidence had been washed away, but the victim's 6-year-old son unwittingly told investigators all they needed to know - without saying a word. The clue was in his genes.
A behavioral profile caused the Baton Rouge Police Department to search for the wrong man. They might not have made an arrest had it not been for a DNA picture of the suspect painted by a molecular biologist.
In 2006, Texas real estate agent Sarah Anne Walker was found brutally murdered in a model home.
A beautiful young woman falls to her death from a cliff overlooking the ocean. Initially, investigators think it was a tragic accident. But after a forensic examination, police uncover a very different picture of what happened.
Women in a Louisiana city live in fear of a rapist who leaves no clues to his identity. But technology and behavioral science combine to give police a new forensic tool.
In 2004, Rebecca Barney and her soon-to-be ex-husband Fred were found shot to death in their Tulsa, Oklahoma, home, which had been set on fire.
After shooting his victims in the head, the killer staged the scene, placed the incriminating evidence into a plastic bag and tossed it into the river.
A woman who suffered from mental illness is found dead. Was it due to natural causes, suicide or murder?
For six years, a serial killer prowled NYC. He wrote letters to police indicating he would kill twelve people.
A married couple decided to escape the cold of winter with a mini-vacation in Key West. The wife went missing, and police searched every square inch of the island, they found nothing but a pair of sandals which might have belonged to her.
A skeleton was discovered in the North Carolina marshlands. Investigators learned she'd been dead for months.
An investigation into the murder of Katie Poirier is stymied by the lack of a body. Finally, investigators use a single tooth found among some charred remains to identify her.
In 1998, an evening out at a Maryland murder mystery theatre performance turns into a real-life whodunit when the badly burned body of Stephen Hricko is discovered in his hotel room after a fire.
In 2003, St. Cloud teenager Jason MacLennan returned home after a night out with friends and discovered his father Ken's body lying in a pool of blood.
Police investigate a discarded sleeping bag containing bloody sneakers and a purse, which eventually leads to the body of a young woman. A mark found on the victim's body enables police to track the killer.
Bombings are difficult to solve, because the perpetrator isn't usually at the scene, and the evidence goes up in smoke. In this case pieces of plastic the size of grains of sand hold the key to a man's murder.
A six-year-old girl ran and hid when she saw her grandmother being beaten to death, but the man followed, beat and assaulted her. She said the assailant was her uncle, who was convicted.
Police were puzzled by an obscure print found at a crime scene where one man had been killed and two teenage girls were seriously injured.
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