Legends of folklore, in matters concerning relations with demons, sorcerers, elves, and fairies, included plots astonishingly similar to those of UFO-related events. Here are three examples, among many others, of recurrent themes in folklore and in UFO-related abductions.
The Nordic god Odin has the power to paralyze his adversaries. With his stick, Hermes can induce paralysis or sleep, just as an alien can do to a witness whom it has forbidden to approach it, or to a person located near an abductee whom it can “switch off.”
In Celtic legends, peasants sometimes had an irresistible urge to go to the fairy mountain, from which they returned, having been cast into various sorts of lethargic spells. Abductees experience similar compulsions that force them to deviate from their usual route and go to a remote location, where they are abducted.
UFO-related events usually occur along sparsely populated fringes of densely populated areas. This choice of location reflects two characteristics of the phenomenon: ostentation, which induces alien intelligence to appear in places in which they will be seen (i.e., populated areas), and stealth, which induces them to never leave behind any decisive physical evidence of their presence, which is easier to do if there are few witnesses.
Roads constitute a good compromise between these two contradictory requirements. In the late Middle Ages, it was common knowledge that the place in which one was most likely to encounter Satan was on a road, or at a crossroads.