Dewshane Williams Videos

On the season finale of DEFIANCE, Nolan fights to save his daughter from the Kaziri directive and the E-Rep. Meanwhile, Amanda learns who really killed her sister. Watch the preview below, as well as an Inside Defiance look at episode 10 and episode 11.

The season finale of Syfy's 'Defiance' airs this Thursday at 8:00pm ET. In the episode Nolan races to stop Irisa before her deadly plan can take effect, while Amanda realizes who really killed her sister.

Syfy will host a marathon of the entire first season of DEFIANCE all day on Monday, May 26th starting at 8 a.m. ET (7 a.m. PT).