Esther Drummond

Esther Drummond was a CIA analyst in the 21st century.

Biography
After discovering the data which the Torchwood virus removed from the CIA database, Esther decided to investigate, as she felt responsible for the injuries her colleague, Rex Matheson, had suffered.

Esther found information about the Torchwood Institute, Captain Jack Harkness, and Gwen Cooper, just as Jack Harkness found her. They were forced to jump from a window to escape a suicide bomber. Jack Harkness told her all about Torchwood before drugging her with retcon. (TW: The New World)