In the sixth-season episode "Milagro", Agent Scully's vulnerability is exposed. In this episode, the murderer takes the victim's heart out. The suspect, a writer named Phillip Padgett, has a particular interest in Scully and is fascinated by her beauty and personality. When she goes to a church to observe a painting, the writer is there and talks to her about the Sacred Heart of Jesus. During the conversation he says she visits the church because she likes art, but not as place of worship. Scully doesn't say otherwise and later she says to Agent Mulder the writer told her her life story. All this suggests that Scully isn't a devout Roman Catholic, although she attempted to approach again the Catholic community and the Catholic faith to which she was devout in her youth, after handling the strange case presented in "Revelations" and also after dealing with life-threatening cancer during the fourth season.