Tricia Janine Helfer (born April 11, 1974) is a Canadian model and actress. She is best known for
playing the humanoid Cylon Number Six in Ronald D. Moore's re-imagined Battlestar Galactica television series.
n October 2011, she got the lead role in the TV Pilot Scent of the Missing playing Susannah, a K-9 Search and Rescue Volunteer. In November 2011, she appeared in the Hallmark TV Movie Mistletoe Over Manhattan.