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Currently you are able to watch "Before They Kill Again - Season 1" streaming on Max, Max Amazon Channel, Discovery+ Amazon Channel, Discovery +, Investigation Discovery, Amazon Prime Video or for free with ads on Investigation Discovery. It is also possible to buy "Before They Kill Again - Season 1" as download on Amazon Video, Fandango At Home, Apple TV.
Sometimes, the only way to stop a madman before he kills again is to get inside the mind of a monster and think like he does. Cops go head-to-head with the most dangerous and deadly criminals in one-on-one battles of wits, and only one of them will win.