watch 01:48 The Loop (TV) Do you like this video? Sister Mary Pius was a young nun who accompanied Sister Mary Augustine to the clinic in the Season 1 episode Damned If You Do. She was portrayed by actress Lori Rom. Pius believes that Augustine's dermatitis is actually stigmata. Retrieved from "https://house.fandom.com/wiki/Mary_Pius?oldid=28019" Categories: Characters Females Season 1 Community content is available under CC-BY-SA unless otherwise noted.