Season 3

Season 3  of 12 Monkeys premiered on Syfy for three consecutive days on May 18 to May 21, 2017. This season contained a total of ten episodes.

Production
The series was officially picked up for a third season on June 29, 2016. The first draft of the season premiere script was completed on September 2, 2016. Production began that month and wrapped on February 27, 2017.

On March 16, 2017, Syfy announced that the entire season would be shown in a binge-style marathon over the course of three days. In this announcement, it also revealed that the series had been renewed for a fourth and final season.

Main Characters

 * Aaron Stanford as James Cole
 * Amanda Schull as Cassandra Railly
 * Kirk Acevedo as José Ramse
 * Todd Stashwick as Theodore Deacon
 * Emily Hampshire as Jennifer Goines
 * Barbara Sukowa as Katarina Jones

Recurring Characters

 * Tom Noonan as Pallid Man
 * Demore Barnes as Marcus Whitley
 * Alisen Down as Olivia
 * Andrew Gillies as Adler
 * Brooke Williams as Hannah Jones
 * Hannah Waddingham as Magdalena
 * Faran Tahir as Mallick
 * Murray Furrow as Lasky
 * James Callis as Athan Cole