In 1991, Grand Junction, Colorado is on edge after a series of deadly bombings kill two people and injure one more. Police race to find the culprit before he strikes again.
Even though their daughter had run away before, she'd always come back. Her parents were sure this time would be no different, but they were wrong.
The body of an attractive young woman was found a mile from her abandoned car. Police were especially concerned when they realized the victim had come to them for protection just two weeks earlier.
The body of a young girl was discovered on isolated farmland near Delano, California. She had no ID, but police found mailbox keys in the pocket of her jeans.
The victim was a self-made man who never minced words. Perhaps he was murdered by a disgruntled client.
Foul play is suspected when Fort Worth factory worker Glenda Furch disappears after completing her shift.
A Michigan State University grad student disappeared and was presumed dead. With the help of a professor of geological sciences, police hoped to get the "dirt" on her killer.
The killer probably hoped to cover his tracks by staging the crime scene. But investigators saw through the attempt almost immediately.
In 1999, Susan Fassett was gunned down as she left her church choir practice in Poughkeepsie, NY. After clearing her husband, police turned their attention to Fred Andros, with whom Susan had an affair.
When a wealthy socialite died after falling down the stairs, witness accounts contradicted evidence. Investigators employed a physicist and an expert in accident reconstruction.
In 2004, Mary Ann Clibbery was found brutally murdered in her Illinois business and investigators had to determine if this was a robbery gone wrong or a calculated murder.
When an off-duty policeman was shot dead, his fellow officers were determined to solve the crime. They needed clues to find the killer and they discovered them in tiny fibres and an asthma inhaler.
In 1986, Gary Dale Larson was stabbed to death in his Edmond, Oklahoma home and then the killer sexually assaulted Larson's girlfriend Janet Haynes.
A young woman is stabbed more than 100 times. The killer leaves DNA behind, but investigators must play a cat-and-mouse game to obtain a suspect's DNA to match.
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.
A killer made great effort to obscure the shoe impressions left when he tracked blood on the floor, but he ended up creating new incriminating evidence...
A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.
A brutal murder, lots of suspects and conflicting evidence but the forensics were clear on one thing: The killer knew his victim. And that alone gave investigators a head start.
A lifelong resident of the tiny town of Lefroy, Tasmania was murdered outside his own home. Robbery appeared to be the motive, but with no suspects, the investigation came to a halt.
The victim was well liked and successful, which made the brutality of the crime even harder to understand.