Katheryn Winnick (born December 17, 1977) is a Canadian actress. She is known for her starring roles in the television series Vikings, Wu Assassins, Big Sky, and her recurring role on the television series Bones.
A human soldier is sent from 2029 to 1984 to stop an almost indestructible cyborg killing machine, sent from the same year, which has been programmed to execute a young woman whose unborn son is the key to humanity's future salvation.