Murder by Numbers - Season 2 (2018)

Within a month, four men in Orange County are brutally stabbed by a mysterious man. No one makes a connection to a gruesome double murder of a mother and son two months earlier-except the man sitting in prison for killing his family.

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

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

The busy streets of Atlanta, GA are shaken as horror of the "Necktie Killer" strikes the city with fear. Detectives from neighboring counties piece together correlative clues and distinctive apparel left behind at each crime scene.

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 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.