This is the title of a short story by Graham Greene. The story is about a Catholic novelist with the name of Pierre Morin. The story's narrator, a Mr. Dunlop, is a non-Catholic admirer of Morin's writings, and he has some interest in Catholicism due to Morin's books. Dunlop runs into Morin at a Christmas Midnight Mass, and notices that Morin doesn't go to communion: