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.
The series follows the lives of 4 high school girls whose clique falls apart after the disappearance of their leader. One year later, the estranged friends are reunited as they begin receiving messages from a mysterious figure named "A" who threatens to expose their deepest secrets.
