Holly was a government worker for the Federal Bureau of Investigation. She worked in the Computer Records Office.

In November 1995, she was mugged by an unknown assailant in Georgetown. The mugger got away with her purse and wasn't caught. A week later, the "Pusher" Robert Patrick Modell was able to influence her to give him confidential FBI records and to believe that Assistant Director Walter Skinner was the man who attacked her. (TXF: "Pusher")

In October 1997, Holly was working in the FBI Communications Center. She was still working with computer records and was friends with FBI Special Agent Dana Scully. (TXF: "Redux")

Holly was played by Julia Arkos. A surname for the character was never established on-screen, although the novelization of the episode "Pusher" gives it as "Patton".