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After a young woman vanishes on her way to work, police desperately follow a trail of videotaped clues they hope will solve a complex mystery. The evidence found inside her car could be the key to solving the brazen abduction.

A gunman shoots a hero fireman dead in his own driveway. Police focus their investigation on the unusual firearm used to commit the crime and an odd trail of clues left behind by the victim himself.

Recreational hunters find the body of a female naval veteran in a rural campground, leaving police to answer challenging questions. How had the victim gotten there? Why was she drugged, and who wanted her dead?

Police watch the disturbing video of a young woman closing up after her shift at a gas station convenience store. Everything seems normal until, in one moment, she is there and, in the next, she is gone, never to be seen again.

Police retrace the steps of a young woman's preparations for a romantic Valentine's dinner that ended in her brutal murder. Hidden in the chaotic crime scene is the clue that will unlock the mystery.

A young woman mysteriously disappears. Friends and family are terrified, but investigators find little to go on. Then, a shocking discovery confirms the worst and turns the spotlight of the investigation on those closest to the victim.

A killer guns down a businessman during a brazen home invasion. The puzzling evidence seems to indicate the crime was well planned and highly calculated. Police explore a variety of motives before they unmask the mastermind behind the attack.

The discovery of a woman's body, burned beyond recognition, marks the start of a disturbing murder investigation. An autopsy reveals the killer stabbed the victim in a sexually motivated attack. Will a similar second crime be the key to solving both?

When police find the lifeless body of a young mother, her husband becomes the prime suspect. However, when an in-depth investigation against him stalls, it raised a critical question: Had police been focused on the wrong man all along?

Police are in a race against time to find a young girl who mysteriously vanished on her way to school. The clues all seem to point to a clear suspect. However, will the speed of the investigation only deepen the tragedy?

Police struggle to solve the heartbreaking murder of a talented young woman, but it will take years to realize that the clue to unlock the mystery is hidden within the crime scene evidence.