The Best Episodes of Murder by Numbers

When a woman is found brutally murdered in her home, all signs point to a local troublemaker, then more bodies start piling up, making police realize they may be dealing with a serial killer, who is preying on the town's most vulnerable citizens.

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In Amherst, N.Y., a missing college student's body is found hidden in the woods near a bike path, making the townspeople realize that the predator who has been stalking women for years has escalated from rapist to killer.

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Police are puzzled by a pair of murders linked by a mysterious note, not realizing the killer has a target in mind.

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Dallas has its dark side, but nothing compares the horror of a series of women found murdered with their eyeballs surgically removed; a pair of beat cops use their street savvy to lead detectives to a sadistic killer and his bizarre motive.

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A monster hunts the streets of Baton Rouge, La., raping and murdering three women; when one brave woman survives a vicious attack, evidence leads police to the hunter.

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A woman is found murdered on the Appalachian Trail and her husband is missing, leaving authorities to wonder if he's the killer or another victim, then more bodies begin to appear.

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The Necktie Killer strikes fear in the hearts of Atlanta's citizens; detectives from neighboring counties piece together correlative clues and distinctive apparel left behind at each crime scene.

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A series of murders in California bear eerie similarities, but police have trouble connecting them -- that is until unique ballistics, mysterious surveillance, and a bloody cell phone lead them to three criminals on a deadly revenge spree.

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In Alexandria, Va., a sheriff's wife answers the door to a blaze of gunfire, causing the community to buzz with theories; then, more citizens are shot at their front doors, leaving everyone wondering who could be next.

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In Orange County, Calif., four men are stabbed by a mystery man in a month's time; no one makes a connection to the gruesome double murder of a woman and her son two months earlier except the man sitting in prison for killing his own family.

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In Billings, Mont., firefighters respond to a fire at a duplex and find two bound and gagged bodies; the victims' house mate is nowhere to be found, prompting police to question whether they're searching for the killer or another victim.

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A woman's husband is murdered by an intruder wearing a clown mask. After three more victims are killed by a deranged clown, police realize they're dealing with a serial killer.

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In Bellevue, Wash., a twisted murderer preys on young women leaving their bodies in sadistic poses; as police work to draw crucial connections, an unconventional clue surfaces and leads them to an unlikely killer hiding in plain sight.

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Firefighters find the bullet-ridden bodies of Robert and Dorothy Pape while responding to a call about smoke billowing from a garage, in which they find a truck on fire; later, police realize the smoldering truck does not belong to the homeowners.

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