12 Monkeys Season 4 Trailer The beginning of the end is nigh! 12 Monkeys returns for the fourth and final season in 2018. Show More… Comments Related Videos 12 Monkeys Season 4 Teaser Promo (HD) 12 Monkeys Season 3 Teaser Promo (HD) 12 Monkeys 2×02 Promo “Primary” (HD) This Season 12 Monkeys Season 2 Trailer (HD)