Syfy's 'Defiance' Adds Lee Tergesen, Nichole Galicia to Season 3 Cast

NBCU SyFy Defiance Still - H 2013

NBCU SyFy Defiance Still - H 2013

Conrad Coates also boards the alien drama, which returns to the cable network in summer 2015.

Syfy is adding The Americans star Lee Tergesen, Nichole Galicia and Conrad Coates to the third season of Defiance, currently shooting in Toronto.

Tergesen boards the dystopian alien drama as General Rahm Tak, a ruthless leader in the Votanis Collective who targets Defiance, now free of Earth Republic oversight, in his pursuit of power. Galicia plays Kindzi, the beautiful and tough daughter of the Omec leader T’evgin, a role filled by Coates.

The third season of Defiance opens on the eve of an impending military siege upon a town facing hard times after the collapse of lucrative mines. The townspeople face an added threat with the surprise arrival of the nearly extinct Omec, an alien race of warriors marked by the decades of subjugation they imposed upon the galaxy in the years preceding the Pale Wars.

Read more Syfy's 'Defiance' Heads to Amazon

Returning for the third season of Defiance is Grant Bowler as Nolan, Julie Benz as Amanda Rosewater, Stephanie Leonidas as Irisa Nolan and Tony Curran as Datak Tarr. Kevin Murphy is back as executive producer and showrunner, with Michael Nankin directing the season three opener.

Defiance, which streams on Amazon Prime, will return to Syfy in summer 2015.

The drama's sophomore season delivered an average of 1.2 million viewers in the 18-49 demo and 2.7 million total viewers, based on live-plus-7 data.