Yvonne (Everything Changes)


 * For other individuals of the same name, see Yvonne.

Yvonne was a colleague of Gwen Cooper's at the Cardiff police department. In 2007, Gwen asked her to search for a Captain Jack Harkness on the police database. She told Gwen the only person with that name and title was an American who went missing in 1941. (TW: Everything Changes)