Lyn Peterfield

Lyn Peterfield was a CIA agent in the 21st century.

Biography
Lyn is a cold-blooded killer and CIA agent. At some point prior to Miracle Day, Peterfield had a relationship with fellow CIA agent Rex Matheson. Later, Lyn was sent to help bring Jack Harkness, Gwen Cooper and Matheson back to America as part of a rendition. While in-flight and reporting Jack's conversations to Brian Friedkin (a CIA official), she was ordered by Brian to 'remove JH'. At some point learning that Jack is mortal, she attempted to assassinate him by putting arsenic in Jack's cola, but was discovered by Rex and Gwen when Jack started showing symptoms. She was then handcuffed while Gwen and Rex attempted to save Jack, but when they had almost succeeded she freed herself and attempted to prevent an antidote (improvised EDTA) being given to Jack. Gwen knocked her unconscious when Lyn insulted her ancestry.

When Lyn returned to America, guards pretended to arrest her. Before she could attack Jack, Gwen and Rex again, Rex, having been warned about an ambush, knocked out the guards in order to free Jack and Gwen. Lyn then attempted to 'restrain' her former lover in hand-to-hand combat, but Rex broke her neck. She survived this due to Miracle Day, and soon after stumbled towards Esther Drummond's stolen car, her head twisted 180 degrees on her body. Despite this, Esther, Jack, Gwen and Rex drove away from her and her CIA associates. (TW: Rendition)

Behind the scenes

 * Nepalese-born actress Dichen Lachman's casting in Miracle Day was actually one of the first to be confirmed in media, leading to initial suggestions that she would be a core cast member.