Lyn Peterfield

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

biography
Lyn was sent to help bring Jack Harkness, Gwen Cooper and fellow CIA agent Rex Matheson to America. She attempted to assassinate Jack Harkness by putting arsenic in Jack's coke, but was discovered by Rex and Gwen. She was then handcuffed while Gwen and Rex attempted to save Jack, but when they had almost succeeded she freed herself. Then Gwen kncked her unconscious.

When Lyn returned to America, guards pretended to arrest her. Before she could attack Jack, Gwen and Rex, Rex knocked out the guards and broke Lyn's neck. However, she survived due to Miracle Day, and soon after stumbled towards Esther Drummond's stolen car, but Esther, Jack, Gwen and Rex drove away from her. (TW: Rendition)