Summary: A girl of almost 16 years, of attractive and innocent appearance, alleged that she had been leading an immoral life and frequenting houses of assignation. She told the story to the people of her church, who were naturally horrified and demanded a thorough investigation of the social vice problems involved. This was undertaken by the police authorities, but they failed to get any satisfactory evidence from the girl. It was later found that the story was all a myth and the girl had not been in the least immoral. Her first statements followed directly after her attendance at an emotional revival meeting where these topics had been preached about. Afterward this girl was in court many times for various reasons. She is a mild psychoneurotic type, exhibiting under stress unusual mental phenomena. She and her family have created an astonishing amount of trouble in law courts as both defendants and complainants, because their peculiar unreliabilities have not been understood. This case has long been under observation and we have much information concerning it. It was found difficult to understand by pastors and others who had given considerable attention to various aspects of it. Annie F. was first seen by us when under custody because of her own statement that she had been leading an immoral life. We have seen her and members of her family many times since. The account of the case can best be given, not by commencing with the cross-section study as obtained at first, but by going at once into its whole connections and evolution. At first it was merely learned that we had to do with an unstable, adolescent girl who had engaged for apparently no purpose whatever in false self-accusations which would naturally blight her career.