In the seriesEdit
- Main article: Small Favor
In Small Favor, Billie cheerily let Harry Dresden and Thomas Raith into the the club when he said that his card didn't work. She met him at the elevator. When she refused to take Harry to Ms. Demeter's office, Thomas demonstrated how serious they were by twisting two heavy dumbbells together. She flew off to get clearance, then returned to escort Harry to Ms. Demeter.