Continuum is a Canadian science fiction television series created by Simon Barry that premiered on Showcase on May 27, 2012, and ran for four seasons. It was produced by Reunion Pictures, Boy Meets Girl Film Company, and Shaw Media. The plot centres around the conflict between a group of terrorists from the year 2077 who time travel to Vancouver, British Columbia, in 2012 and a police officer who unintentionally accompanies them. In spite of being many years early, the terrorist group decides to continue its violent campaign to stop corporations of the future from replacing governments, while the police officer endeavours to stop them without revealing to everyone that she and the terrorists are from the future.

City Protective Services (CPS) law enforcement officer Kiera Cameron (portrayed by Rachel Nichols) lives with her husband and son in 2077-era Vancouver under the corporatocratic and oligarchic dystopia of the North American Union and its Corporate Congress, a technologically advanced high-surveillance police state. When a group of freedom fighters known as Liber8 escape execution by fleeing to the year 2012, Kiera is involuntarily transported with them. Joining with Detective Carlos Fonnegra of the Vancouver Police Department and enlisting the help of teen computer genius—and future corporate oligarch—Alec Sadler, Kiera works to track down and thwart Edouard Kagame and his followers in the present day while concealing her identity as a time-traveler from the future and tries to find a way to return home to her family.

Episodes from the first and second seasons begin with the plot of the show narrated via a voice-over from the point of view of Kiera Cameron.

2077. My time, my city, my family. When terrorists killed thousands of innocents, they were condemned to die. They had other plans. A time travel device sent us all back sixty-five years. I want to get home, but I can't be sure what I will return to if history is changed. Their plan: to corrupt and control the present in order to win the future. What they didn't plan on was me.

Starting with the third season, the narration was replaced by a new sequence that contains a computer-animated version of the time travel device, scenes from previous seasons, and cast credits before ending with Kiera Cameron holding the device, followed by the title card.

The first season has 10 episodes. On August 25, 2012, Showcase renewed Continuum for a second season of 13 episodes, which premiered on April 21, 2013, on Showcase in Canada, May 23, 2013, on Syfy in the UK, and June 7, 2013, on Syfy in the US. On June 5, 2013, Continuum was officially renewed for a third season, which premiered on March 16, 2014, on Showcase in Canada and April 4, 2014, on Syfy in the US.

During an interview in May 2014, Simon Barry revealed that he had seven to ten seasons in mind for Continuum. Showcase announced on December 8, 2014, that Continuum had been renewed for a fourth and final season of six episodes, which began airing on September 4, 2015, on Showcase in Canada, and September 11, 2015, on Syfy in the US. The series concluded, with a complete and final outcome to the storyline, on October 9, 2015.

Series creator Simon Barry explains how the show was picked up by Showcase: