For 18 years, a man who murdered his entire family eluded the FBI. Investigators used art and forensic science to find the killer.

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When a teenaged girl goes missing, no one knows if she ran away or if she was the victim of foul play. Everyone's worst fears are confirmed when a body is found at the bottom of an isolated ravine. Police scour the crime scene, hoping to find enough evidence to identify the killer.

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A woman was ambushed in her driveway and shot to death. During their investigation, police learned that a co-worker half her age was in love with her, and that she'd spurned his advances. They now had to determine if love had turned into obsession... and a motive for murder.

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A possible false confession forces investigators to reopen the case of a missing six year old. A decade later, a fresh look at new evidence leads them to someone hiding in plain sight.

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The bodies of three women were found floating in Tampa Bay. The water washed away any evidence, but police hoped a handwritten note found in the victims' car would lead to the killer - so they posted huge copies of the note on five highway billboards.

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The victim had been sexually assaulted and stabbed to death on the beach, just ten yards from the hotel where she was staying. A pair of men's tennis shoes was discovered near her body. Police were sure that if they found the man who fit the shoes, they would also find the man who committed the crime.

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A mysterious computer crash pushes a thriving manufacturing company to the brink of collapse, jeopardizing the jobs of hundreds of employees. There is no apparent cause and no obvious clues. Forensic investigators must determine if the crash was the result of a computer defect, human error, or sabotage.

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