James Cole and Dr. Railly embark on a desperate search across time to find the man responsible for the apocalypse -- a fellow time-traveler who calls himself the Witness.
As Cole, Railly, and their unlikely allies get closer to the truth, they learn there are deadly consequences for all of history ... and time itself.
A man from the year 2043 is sent back to the present day in the hopes of stopping a global pandemic that will all but wipe out humanity.
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IN PRODUCTION. Syfy aired Season Three of 12 Monkeys in a 3-day marathon in May. The show returns in 2018 with its fourth and final season.
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