Sentence:  Characters such as "Jack Brown" [supposedly a UFO investigator] have been annoying and frightening people for centuries. In earlier ages they were associated with the occult or with religious experience … the "dark men" of countless traditions. Today they are a part of the UFO mythos. They arrive after a UFO or <WSD>fortean</WSD> event, sometimes afoot, sometimes driving automobiles that appear new even if the vehicle is clearly many years old. ... They ask strange questions and make outlandish observations, or they simply follow from place to place. 
Meaning of the word marked with <WSD> tags:  Of or pertaining to anomalous phenomena.