Defiance    

http://defiance.com/en/

In June 2011, Syfy announced that they would be producing a television series which was being developed by Rockne S. O'Bannon and would be produced by Universal Cable Productions. It was also announced that the TV series would be connected to a video game being produced by Trion Worlds. It was later confirmed that Syfy had ordered thirteen episodes for the show's first season, which would premiere in either late 2012 or the summer of 2013.  In July 2012, the network announced that the series and game would debut in April 2013.
Casting announcements began in January 2012 with Grant Bowler first to be cast. Bowler plays Jeb Nolan, "the law keeper in a bustling frontier boomtown that is one of the new world's few oasis of civility and inclusion." On February 8, TVWise revealed profiles of five of the main characters. It was later reported that Gillian Anderson had been briefly considered by the show's producers to play either Amanda or Stahma, however, that casting did not move forward as they assumed she would not be interested in returning to episodic television. On March 8, 2012 it was announced that Jaime Murray, Julie Benz, Stephanie Leonidas and Tony Curran has been cast in the series. Jaime Murray plays Stahma Tarr "Datak’s beautiful and proper wife", Julie Benz plays Amanda Rosewater, the mayor of Defiance, Stephanie Leonidas plays Irisa, "a beautiful warrior who is part of an alien race called the Irathients" and Tony Curran plays Datak Tarr, "the right hand to Amanda."
Production on the series began in April 2012 in Toronto^.
As of Season 1, linguist David J. Peterson has developed two full languages for the different alien races, for the Castithans and the Irathients. Basic language sketches also exist for two of the other races, the Indogenes and the Liberata.
On January 7, 2013, Shaw Media announced it had picked up 12 episodes for the Canadian broadcast rights to air on cable channel Showcase., to debut April 15, 2013.

The series is set in the near future, where aliens known collectively as Votans have come to Earth seeking a new home after their solar system was destroyed. However, when they reached Earth, they discovered despite a prolonged negotiation with the government on Earth, they were not welcome. Rather than turn away, they began a war with the humans as they are determined to make Earth their new home. During the war, the Votans drop terraformers on the planet and transform the surface of the planet; scorching the earth, opening chasms in the ground and covering the surface of the planet in dust and debris. After decades of war, a ceasefire is declared when both sides realise they must focus on survival on this new almost alien planet. The series largely revolves around the character of Jeb Nolan. Jeb was only ten years old when the Votans arrived and he served in the military during the war. With the war now over, he returns to his hometown of St Louis to find it's is no longer the city he left; it is little more than refugee camp. Deciding his services are needed, Jeb takes up a position as the Chief Lawkeeper in Defiance, so he can protect the town from dangerous clashes between humans, aliens, military scavengers and other dangerous visitors who occasionally enter the town. (IMDB.com)